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Thank you so much

only if you have time, don't want to be bothering

Yes 1) a)47.5g b)3.5g/year c)after 9.3 years 2) a)7750L b) 28minutes 3) a)k=0.101 b)2801 c)20days d)11 people per day ii)283 people per day 4) 15 months

can someone please answer these questions with working out? 1)If 100g of a substance decays to 80g after 3 years, find, to 1 decimal place, a) its mass after 10 years b) the rate of decay after 10 years c) when it will decay to 50 g 2) Water is flowing out of a pool at the rate given...