Question

The rate of sales of a certain brand of bicycle by a retailer in thousands of dollars per month is given by s(t) = 28t – 0.3342 where t is the number of months after an advertising campaign has begun. (a) Find the amount of sales, in thousand of dollars, for the first six months after the start of the advertising campaign. Give you answer to three decimal places. $ 432.720 X thousand dollars (b) Find the average sales per month for the second six month period of the advertising campaign. Give you answer to three decimal places. $ 168.84 x thousand dollars per month -/1.64 POINTS Suppose that copper is being projected to be extracted from a certain mine at a rate given by P"(t) = 200e-0.17 where P(t) is measured in tons of copper and t is measured in years. (a) How many tons of copper is projected to be extracted during the second four year period? Give you answer to three decimal places. tons (b) How many tons of copper is projected to be extracted during the sixth and seventh years? Give you answer to three decimal places. tons

Answer 1

(SCD- 28+ - 0.33% 6 monst dt for ist Bra total sell amount Sell amount ds(+) d. = (28t - 0.33 €2) at Pepsi ou (6)-5(0) = [14+2 - 011437 2 - 01/ x 6 Mirinda =) total sell= 1486 - = 480. 24 thousand dollag M. Dew arerage for next 6 months sell 12 (284-0.33 4²) dt 7 up Soda . * [ Ber148?0168] + TV4X1200X12°- (14262-02*c)] $x[1825.92 – 48024] Slice Nimbo: - 224.28 thousand dollas pes Sung month. NMS Toto