# Where can I find Cambridge worked solutions? (1 Viewer)

#### chxx1234

##### New Member
Hi, does anyone know where I can find Cambridge worked solutions for maths extension 1 (both yr11 and 12)? Thanks!

#### tywebb

##### dangerman
They are in the Teacher's Suites. They are available to the teachers who may at their discretion make the solutions available to the students. They are however incomplete.

Year 11:

Year 12:

I made a list of questions for which the solutions are missing. I haven't looked at this for a while so maybe some of the following may have already been fixed by Cambridge.

---------------------------------------------------------

Year 11 Cambridge Extension 1 solutions complete except

1D Q8e, 8f, 9e, 9f, 10e, 10f
1G Q6g, 6h, 7
2C Q6j, 6k, 6l
Chapter 2 review exercise Q16, 17, 18, 19
3D Q4
3E Q16c
4C Q7a, 8e, 8f
6E Q19
Chapter 6 review exercise Q1, 9
7D Q14e, 14g
8F Q11, 12
8G Q12
9C Q1a, 1b
9D Q2, 10, 11, 21
9E Q4
9F Q1-5, 7, 10a, 10b, 10c, 11
9G Q1a, 2b, 2c, 3, 4, 7
9H Q6b, 6c, 10a, 11b, 11c, 14
9I Q2h, 16
9K Q9b
9L Q1, 2a, 2b, 2d, 5, 6, 7
Chapter 9 review exercise Q2a, 2b, 2f, 2g, 2h, 7a, 7b
11E Q1, 2, 3, 4a, 4b, 4c, 5, 11
11F Q8c
11G Q6
11H Q1, 3, 4, 6a, 6c, 12
11J Q1, 2b, 4b, 5b, 5c, 6, 7, 8d, 9a, 9c, 11, 12a, 13, 14, 15, 16
Chapter 11 Review exercise Q2a, 2c, 2d, 5, 6, 7, 8, 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h, 9i, 13, 15, 17, 18, 22a, 23, 30a, 30b
13A Q4a, 4c, 5a, 7a, 7d, 13a, 13b, 13c, 13d, 13f
13B Q1, 2, 3, 4, 5a, 10a, 10b, 10c, 10e, 10f, 10g, 12a, 12b, 13
13C Q1, 2, 4b, 6b, 6c, 8c, 10b, 10e, 13, 14
13D Q1, 2, 3, 4a, 4b, 5, 6, 7b, 8, 9, 10, 11, 12, 13, 14
Chapter 13 Review Exercise Q3, 5b, 9, 10, 12b
14E Q18c
15A Q17
Chapter 17 review exercise Q3a

-------------------------

Some are incorrect:

3F Q10b
9C Q5
9F Q6
9I Q2a, 2c, 2d, 2e, 2f, 2g, 9
11H Q6b, 7a, 7b, 7e, 7f, 7g, 7h, 8, 9a
Chapter 11 Review exercise Q31
13C Q12a
13D Q4c, 7a

---------------------

Year 12 Ext 1 Cambridge solutions are complete except for:

1A Q21
1I Q9, 10
3G Q8e
3H Q10e, 11e
4B Q18, 19 (note solution numbered 18 is actually the solution to question 20)
5A Q12
5H Q17
6I Q4b
7D Q5
9B Q14bii
9C Q13e, 13f, 17b
Chapter 9 review exercise Q11d
11B Q5e, 5f
12A Q22b
12B Q1
Chapter 12 review exercise Q20b, 20c
13A Q2c
13C Q19biv
13D Q19e
14D Q16
15F Q5, 6, 7, 8a, 8b, 8h, 9, 10, 11a, 11b, 11c, 11f, 11g, 11h, 11i, 11j, 12
16A Q12bii (note that solution number ii is actually for iii)
16B Q12giii, 12giv, 16c (note solution numbered 16c is actually for 16d), 17d, 17e, 17f
16D Q11, 19c
16G Q1e, 2, 3, 4a, 4b, 4d, 4e, 4f, 4g, 4h, 5, 6, 7, 8a, 8b, 8c, 8e, 8f, 8g, 8h, 8i, 9
17B Q7a, 7b, 7c, 7d, 7i, 7j
17C Q10a, 11

-----------------------

Some are incorrect:

1A Q17h
3D Q16b, 16d, 16e
5H Q16 - only answer given, not complete solution
7B Q15
12A Q22a
12E Q3a
13A Q1c, 3c

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#### tywebb

##### dangerman
Taking this a little further there is also a list for Ext. 2 for missing solutions:

Ext 2 Cambridge solutions are complete except for:

1H Q17
2F Q17, 18, 19, 20, 21
3C Q11d
3D Q10
3E Q3e
4A Q5e
6F Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
6G Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
6H Q1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29

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#### tywebb

##### dangerman
Taking this a little further there is also a list for Ext. 2 for missing solutions:

Ext 2 Cambridge solutions are complete except for:

1H Q17
2F Q17, 18, 19, 20, 21
3C Q11d
3D Q10
3E Q3e
4A Q5e
6F Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
6G Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
6H Q1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29

Most of these Extension 2 ones have now been added except for 3E Q3e and 6G Q17. But they are now available at https://www.angelfire.com/ab7/fourunit/Cambridge-e2-3EQ3e-6GQ17.pdf and that completes the solutions for Cambridge Extension 2.

I will update the lists for Extension 1 soon.

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#### tywebb

##### dangerman
This rather complicated post is to update the list of missing Cambridge Year 11 Extension 1 solutions. As complicated as it is, the end result is to shorten the list and hence make it easier to complete the solutions.

I will make a similar post later for Cambridge Yr 12 Extension 1.

It is a somewhat larger task than the one I did for Extension 2 and so completing the solutions (and for that matter even correcting some too) will take more time and will result in a larger documents.

I have also provided some commentary to the list

"cf. Answers" could be an acceptable solution provided one could imagine the question as an exam question and a bold answer acceptable with full marks.

"cf. Answers" is not a solution if a full solution has many steps and a bold answer would not get full marks.

“cf. ask your teacher” is not a solution. Giving the problem to someone else is not a solution. You are not going be able to delegate your responsibilities in the HSC exam so don’t start now.

-------------------

Update to Yr11 Cambridge Extension 1 solutions.

4C Q7a

6E Q19: "See answers provided in textbook." acceptable in this case

Chapter 6 review exercise Q1 "Use a calculator to find each of these values. Ensure it is in degrees mode." is not a solution - but in this case the cf. answers would suffice

Chapter 6 review exercise Q9: "See page section 6E of textbook." perhaps they mean see page 254 which would suffice

8F Q11, 12: "Cf. answers, no working required." acceptable in this case

9C Q1a, 1b: "No working required, cf. answers" acceptable

9D Q2: "No working required, cf. answers" acceptable

9F Q1-4, 7, 10a, 10b, 10c: "No working required, cf. answers" - acceptable

9G Q1a, Q2b, 2c, 3, 4, 7: "No working required, cf. answers" - acceptable

9H Q6b, 6c, 10a, 11b: "NSFR" presumably means no solution further required (or cf answers) - which would be acceptable

9L Q1, 5, 6, 7: "No working required, cf. answers" - acceptable

11E Q1, 4a, 4b, 4c, 5, 11: "cf. answers" - acceptable

11F Q8c: "cf. answers" - acceptable

11G Q6a-h: "cf. answers" - acceptable

11H Q1, 6a: "cf. answers" - acceptable

11J Q4b, 5b, 5c, 6, 7, 8d, 9a, 9c, 11, 13b, 15, 16: "cf. answers" - acceptable

Chapter 11 Review exercise Q2a, 2c, 2d, 5, 6, 7, 8, 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h, 13, 17, 18, 22a, 30a, 30b: "cf. answers" - acceptable

13A Q4a, 4c, 5a, 7a, 7d: "cf. answers" - acceptable

13A Q13d, 13f: "cf. answers" - acceptable - just note that the answers in the textbook are incorrectly labelled 13a, 13c but they are actually 13d and 13f

13B Q1, 2, 4, 5a, 10f, 12a, 12b: "cf. answers" - acceptable

13B Q13: "cf. answers" - acceptable - except note that the answer for 13a and 13b have been combined into what is incorrectly labelled 13b

13C Q1, 2, 4b, 6b, 6c, 8c, 10b, 10e, 13, 14: "cf. answers" - acceptable

13D Q1c, 2a, 12a, 14a, 14b: "cf. answers" - acceptable

Chapter 13 Review Exercise Q3, 5b, 9, 10: "cf. answers" - acceptable

Chapter 17 review exercise Q3a

-------------------------

Some are incorrect:

3F Q10b
9C Q5
9F Q6
9I Q2, 9
11H Q6b, 7a, 7b, 7e, 7f, 7g, 7h, 8, 9a
13C Q12a
13D 7a

---------------

So now we finally have a shortened list of the ones still missing:

1D Q8e, 8f, 9e, 9f, 10e, 10f
1G Q6g, 6h, 7
2C Q6j, 6k, 6l
Chapter 2 review exercise Q16, 17, 18, 19

3D Q4: "Tech-only question, no worked solution" - surely a screenshot of a wolframalpha picture would suffice - something they could easily have put into the solutions

3E Q16c
4C Q8e, 8f
7D Q14e, 14g
8G Q12 (project)
9D Q10, 11

9D Q21: "Answers may vary" - is not a solution. If that was a student response in an HSC exam it would get 0. Furthermore, "for discussion" ... really? We must have silence in the HSC exam. Quiet please.

9E Q4 (Note: Their solution which they call 4a, 4b, 4c, 4d, 4e, 4f are actually 3a, 3b, 3c, 3d, 3e, 3f and there is no solution to Q4).

9F Q5, 11: "No working required, cf. answers" - not acceptable. Several steps required. Bold answer probably wouldn't get full marks in the HSC exam

9H Q14 - incomplete and NSFR unacceptable as several steps would be required

9I Q16ai-vi: "Answers may vary" is not a solution

9I Q16bi-bii: "No working required, cf. answers." - unacceptable - several steps required

9K Q9b

9L Q2a, 2b, 2d

Chapter 9 review exercise Q2a, 2b, 2f, 2g, 2h, 7a, 7b

11H Q3, 4, 6c: "cf. answers" - unacceptable - more working required

11H Q7a, Q7b, 7e, 7f, 7g, 7h - cf. answers is not a solution

11J Q1: "Refer to teacher" - not a solution

11J Q2b: "cf. answers" - unacceptable - more working required

11J Q12a

11J Q13a, 14: "cf. answers" - unacceptable - sketch missing

Chapter 11 Review exercise Q15

Chapter 11 Review exercise Q23: "cf. answers" - unacceptable - more working required

Chapter 11 Review exercise Q31: "Examine the graphs of 𝑦 = 𝑠𝑖𝑛𝑥 and 𝑦 = 𝑐𝑜𝑠𝑥 to establish the phase changes" and "Examine the graphs of 𝑦 = 𝑠𝑖𝑛𝑥 and 𝑦 = 𝑐𝑜𝑠𝑥 to establish the points of intersection" is not a solution

13A Q13a, 13b, 13c: "Answers may vary" is not a solution

13B Q3, 10, 10b, 10c: "Answers may vary" is not a solution

13D Q1a, 1b: "cf. answers" - unacceptable - graphs missing

13D Q2b, 2c, 2d, 2e, 2f, 3, 4a, 4b, 5, 6, 7b, 8, 9, 10, 11, 12b, 13, 14c: "cf. answers" - except there ARE no answers!

13D Q4c - incomplete. All they did was the mean.

Chapter 13 Review Exercise Q12b: "cf. answers" - except there ARE no answers!

14E Q18c

15A Q17: "Students check the answer themselves" is not a solution

----------------------
Here is a more thorough description of the errors in Year 11:

3F Q10b. The solution refers back to Q6a, 6b, 6c. However the question doesn't. 10b has 3 different quadratics instead.

9C Q5:

5a gradient of normal is 1/6 not -1/6

5c The curve, tangent and normal all have the same y-intercept which is 15, so the normal given as y=(1/8)x-15 should be y=(1/8)x+15

5d Normal is x=4 not y=4

9F Q6:

6a - wrong derivative

6b - The normal is not 1/9. The gradient of the normal is 1/9.

9G Q2a - incomplete - however cf Answers may be acceptable

9H Q11c - incomplete - "ANSWERS MAY VARY" for the rest of the question is not a solution. Also the y-coordinate for V is incorrect in the Cambridge solutions.

9I Q2: For none of the questions do the Cambridge solutions answer the second part of the question which is to state any values of x for which the tangent is horizontal.

9I Q2a: Function is (x+1)/(x-1) not x/(x+1)

9I Q2c: Function is (3-2x)/(x+5) not x/(1-3x)

9I Q2d: Function is x^2/(1-x) not (x+1)/(x-1)

9I Q2e: Function is (x^2-1)/(x^2+1) not (x+2)/(x-2)

9I Q2f: Function is x/(1-x^2) not (x-2)/(x+2)

9I Q2g: Function is (x^3-1)/(x^3+1) not (3x-2)/(2x-3)

9I Q2h: Function is (x^2-9)/(x^2-4) not (5-4x)/(5+4x)

9I Q9:

9a: they did not find the normal

9b: they did not find the cartesian equation

11H Q6b: Purported solution to 6b is actually the solution to 6a. No solution to 6b is given

11H Q8, 9a - they didn't solve for x or alpha (note the question is wrong in Q9 because the question says solve for x and the equations are in terms of alpha)

11H Q9b: One of the answers is not correct to 2 decimal places

13C Q12a: "See ‘uniform discrete possibility distribution’ in 11A" - but 11A has nothing whatsoever to do with uniform discrete possibility distributions. 11A is "The exponential function base e". I think they meant 13A. But that is still not a solution. The answer is 1/n.

13D 7a: sigma=sqrt(17.901-3.441^2) not 17.901-3.441^2

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#### tywebb

##### dangerman
Update to Yr12 Cambridge Extension 1 solutions.

1I Q9a, 9b, 9c, 10a, 10b: "Answers are contained in the question." - acceptable for these parts but not 9d or 10c

3G Q8e
3H Q10e, 11e
4B Q18, 19

9B Q14bii: solution is there but is incorrectly labelled 14bi

9C Q13e, 13f

Chapter 9 review exercise Q11d

11B Q5e, 5f

12A Q22a
12A Q22b

15F Q8a

-----------------------

Some are incorrect:

1A Q17h
3D Q16b, 16d, 16e
5H Q16 - only answer given, not complete solution
7B Q14b
7B Q15
12E Q3a
13A Q1c, 3c
16D Q11

----------------------

still missing:

1A Q21: "Answers will vary" is not a solution

1I 9d, 10c: "Answers are contained in the question." - OK for parts 9a, 9b, 9c, 10a, 10b nut not for 9d, 10c

5A Q12: "This question uses technology to investigate some of the definite integrals from other questions in this exercise." - does not constitute a solution.

5H Q17: "answers will vary" - is not a solution

6I Q4b

7D Q5: "Technology" is not a solution

9C Q17b

12B Q1: "Answers will very" is not a solution

Chapter 12 review exercise Q20b, 20c, 21a

13A Q2c

13C Q19biv

13D Q19e

14D Q16: "Refer to the answers for questions 3 – 11" - inappropriate solution as the question asked for a spreadsheet

15F Q5, 6, 7, 9, 12: "Answers will very" is not a solution

15F Q8b :"Refer to the Excel spreadsheet provided in the digital textbook." is OK for 8a but not 8b

15F Q8h, 10, 11a, 11b, 11c, 11f, 11g, 11h, 11i, 11j

16A Q12bii (note that solution number ii is actually for iii)

16B Q12giii, 12giv, 16c (note solution numbered 16c is actually for 16d), 17d, 17e, 17f

16D 19c

16G Q1e, 2, 3, 4a, 4b, 4d, 4e, 4f, 4g, 4h, 5, 6, 7, 8a, 8b, 8c, 8e, 8f, 8g, 8h, 8i, 9

17B Q7a, 7b, 7c, 7d, 7i, 7j

17C Q10a: "Spreadsheet" - is not a solution

17C Q11: "Spreadsheet investigation" - is not a solution

----------------------------
Here is a more thorough description of the errors in Year 12

1A Q17h: 2 curves can be drawn

3D Q16b: Firstly, it is not an enrichment exercise, but a development exercise

3D Q16d: no example given

3D Q16e: no proof given

5H Q16: - only answer given, not complete solution

7B Q14b: The last graph is for y′′′′ not y′′′.

7B Q15: There are no graphs on page 321 of the textbook

12E Q3a: Question says show that. No working is shown

13A Q1c: This was probably a mistake in the question which is first-order. The equation in the solutions is a different equation

13A Q3c: This follows from Q1c and the answer for the equation in the textbook is one arbitrary constant.

16D Q11: "The answers are the same when questions are solved using technology." - No they aren't. In particular 16D Q4ciii, 4civ and 7cii are the same as Cambridge Advanced Year 12 10D Q4ciii, 4civ and 7cii which give different answers using technology.

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#### tywebb

##### dangerman
Here are the corrections to incorrect Cambridge solutions to the Extension 1 Year 11 textbook:

This now leaves the following somewhat smaller list:

Missing Year 11:

1D Q8e, 8f, 9e, 9f, 10e, 10f
1G Q6g, 6h, 7
2C Q6j, 6k, 6l
Chapter 2 review exercise Q16, 17, 18, 19
3D Q4
3E Q16c
4C Q8e, 8f
7D Q14e, 14g
8G Q12
9D Q10, 11, 21
9E Q4
9F Q5, 11
9H Q14
9I Q16ai-vi, 16bi-bii
9K Q9b
9L Q2a, 2b, 2d
Chapter 9 review exercise Q2a, 2b, 2f, 2g, 2h, 7a, 7b
11E Q2, 3
11H Q3, 4, 6c, 7a, 7b, 7e, 7f, 7g, 7h, 12
11J Q1, 2b, 12a, 13a, 14
Chapter 11 Review exercise Q9i, 15, 23, 31
13A Q13a, 13b, 13c
13B Q3, 10, 10b, 10c, Q10e, 10g
13D Q1a, 1b, 2b, 2c, 2d, 2e, 2f, 3, 4a, 4b, 4c, 5, 6, 7b, 8, 9, 10, 11, 12b, 13, 14c
Chapter 13 Review Exercise Q12b
14E Q18c
15A Q17
---------------------
Incorrect Year 12:

1A Q17h
3D Q16b, 16d, 16e
5H Q16
7B Q15
12E Q3a
13A Q1c, 3c
16D Q11
------------------
Missing Year 12:

1A Q21
1I 9d, 10c
5A Q12:
5H Q17
6I Q4b
7D Q5
9C Q17b
12B Q1
Chapter 12 review exercise Q20b, 20c, 21a
13A Q2c
13C Q19biv
13D Q19e
14D Q16
15F Q5, 6, 7,8b, 8h, 9, 10, 11a, 11b, 11c, 11f, 11g, 11h, 11i, 11j, 12
16A Q12bii
16B Q12giii, 12giv, 16c, 17d, 17e, 17f
16D 19c
16G Q1e, 2, 3, 4a, 4b, 4d, 4e, 4f, 4g, 4h, 5, 6, 7, 8a, 8b, 8c, 8e, 8f, 8g, 8h, 8i, 9
17B Q7a, 7b, 7c, 7d, 7i, 7j
17C Q10a, 11

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#### HazzRat

##### H̊ͯaͤz͠z̬̼iẻͩ̊͏̖͈̪
Should I just put the worked solutions in the resources tab or would that be illegal. My ‘Anarchist cookbook’ unfortunately got taken down.

#### tywebb

##### dangerman
Should I just put the worked solutions in the resources tab or would that be illegal. My ‘Anarchist cookbook’ unfortunately got taken down.
I think the most up-to-date Cambridge Extension 1 solutions are best sourced from the links I previously posted:

and

This is for more practical reasons rather than legal.

Other versions elsewhere on the net are most likely out-of-date.

As I said previously one need not buy them, but the teachers can redownload them if need be to get the more up-to-date versions from those links and Cambridge allow teachers to provide them to students free-of-charge if they deem it appropriate to do so.

This of course does not preclude you from posting up your own solutions. I would especially encourage this for the ones that are missing or incorrect. As you can see in my previous post the list is still quite large and I would appreciate any help in reducing it down further.

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#### tywebb

##### dangerman
The corrections to incorrect Cambridge solutions to the Extension 1 Year 12 textbook are now at http://www.angelfire.com/ab7/fourunit/Cambridge-y12-e1-sol-cor.pdf

and together with the Year 11 corrections at http://www.angelfire.com/ab7/fourunit/Cambridge-y11-e1-sol-cor.pdf this further reduces the size of the list. However it is more manageable if they are now split into 2 styles of questions: non-investigative and investigative.

Missing solutions:

Year 11 non-investigative style

1D Q8e, 8f, 9b, 9f, 10e, 10f
1G Q6g, 6h, 7
2C Q6j, 6k, 6l
Chapter 2 review exercise Q16, 17, 18, 19
3D Q4
3E Q16c
4C Q8e, 8f
7D Q14e, 14g
9D Q10, 11
9E Q4
9F Q5, 11
9H Q14
9I Q16ai-vi, 16bi-bii
9K Q9b
9L Q2a, 2b, 2d
Chapter 9 review exercise Q2a, 2b, 2f, 2g, 2h, 7a, 7b
11E Q2, 3
11H Q3, 4, 6c, 7a, 7b, 7e, 7f, 7g, 7h
Chapter 11 Review exercise Q9i, 15, 23, 31
13D Q1a, 1b
14E Q18c
15A Q17

Year 11 investigative style

8G Q12
9D Q21
11H Q12
11J Q1, 2b, 12a, 13a, 14
13A Q13a, 13b, 13c
13B Q3, 10, 10b, 10c, 10e, 10g
13D Q2b, 2c, 2d, 2e, 2f, 3, 4a, 4b, 5, 6, 7b, 8, 9, 10, 11, 12b, 13, 14c
13D Q4c
Chapter 13 Review Exercise Q12b

Year 12 non-investigative style

1I 9d, 10c
6I Q4b
9C Q17b
12B Q1
Chapter 12 review exercise Q20b, 20c, 21a
13A Q2c
13C Q19biv
13D Q19e
16A Q12bii
16B Q12giii, 12giv, 16c
16G Q1e

Year 12 investigative style

1A Q21
5A Q12
5H Q17
7D Q5
14D Q16
15F Q5, 6, 7, 8b, 8h, 9, 10, 11a, 11b, 11c, 11f, 11g, 11h, 11i, 11j, 12
16B Q17d, 17e, 17f
16D 19c
16G Q2, 3, 4a, 4b, 4d, 4e, 4f, 4g, 4h, 5, 6, 7, 8a, 8b, 8c, 8e, 8f, 8g, 8h, 8i, 9
17B Q7a, 7b, 7c, 7d, 7i, 7j
17C Q10a, 11

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#### tywebb

##### dangerman
Non-investigative Year 11 additions are at https://www.angelfire.com/ab7/fourunit/Cambridge-y11-e1-sol-nia.pdf

Together with http://www.angelfire.com/ab7/fourunit/Cambridge-y11-e1-sol-cor.pdf and http://www.angelfire.com/ab7/fourunit/Cambridge-y12-e1-sol-cor.pdf this now reduced the list of the missing ones to

Year 11 investigative style:

8G Q12
9D Q21
11H Q12
11J Q1, 2b, 12a, 13a, 14
13A Q13a, 13b, 13c
13B Q3, 10, 10b, 10c, 10e, 10g
13D Q2b, 2c, 2d, 2e, 2f, 3, 4a, 4b, 5, 6, 7b, 8, 9, 10, 11, 12b, 13, 14c
13D Q4c
Chapter 13 Review Exercise Q12b

Year 12 non-investigative style:

1I Q9d, 10c
6I Q4b
9C Q17b
12B Q1
Chapter 12 review exercise Q20b, 20c, 21a
13A Q2c
13C Q19biv
13D Q19e
16A Q12bii
16B Q12giii, 12giv, 16c
16G Q1e

Year 12 investigative style:

1A Q21
5A Q12
5H Q17
7D Q5
14D Q16
15F Q5, 6, 7, 8b, 8h, 9, 10, 11a, 11b, 11c, 11f, 11g, 11h, 11i, 11j, 12
16B Q17d, 17e, 17f
16D 19c
16G Q2, 3, 4a, 4b, 4d, 4e, 4f, 4g, 4h, 5, 6, 7, 8a, 8b, 8c, 8e, 8f, 8g, 8h, 8i, 9
17B Q7a, 7b, 7c, 7d, 7i, 7j
17C Q10a, 11

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