The weekly marginal cost of producing x pairs of tennis shoes is given by the following function, where C(x) is cost in dollars. 500 x+1 C'(x)=11+ If the xed costs are $2,000 per week, find the cost function. What is the average cost per pair of shoes if 1,000 pairs of shoes are produced each week? The cost function is C(x) = A yeast culture is growing at the rate of W'(t) = 0.8:20'1t "1th after t hours? After 6 hours? grams per hour. If the starting culture weighs 8 grams, what will be the weight of The weight of the culture aftert hours will be W(t) = The projected rate of increase in enrollment at a new college is estimated by (E 7 _ 3/2 dt 7,000(t + 16) where E(t) is the projected enrollment in t years. If the enrollment is 4,000 now (t= 0), nd the projected enrollment 48 years from now. The projected enrollment 48 years from now is (Round to the nearest integer as needed.)