The sales in thousands of new type of product are given by the formula S(t) = 170 – 80e-0.9t where t represents time in years. Find the rate of change of sales at the time when t = 7 Give your final answer in thousand per year unit and round it to 1 digit after the decimal point.

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Q: 50/20=t/4

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Q: A country used the function M(t)=3.45(1.56)^t to estimate the inflation rate on a gallon of milk t…

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Q: The amount of a substance remaining (in grams) is given by the function P (t) = 1.9(.89)^t/2 where…

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Q: x/16 = 4/3

A: