Applications. Remember to show all your work. (7 points each) 17. A manufacturer produced mountain bikes. The 18. The total cost (in dollars) of printing x dictionaries research department produced the marginal profit (in is dollars) function C(x) = 30,000 + 15x. p1 = 700 - 0.4x 0 5 x - 900 Find the average value of the cost function over the where x is the number of bikes produced per month. interval [0, 700]. Compute the increase in profit going from a production level of 250 bikes per month to 900 bikes per month. Set up a definite integral and evaluate it. 19. Given the demand function 20. Given the supply function 3,000 p = S(x) = 20e0.02x p = D(x) = Find the average price (in dollars) over the suppl X find the average price (in dollars) over the demand interval [25, 50]. interval [450, 650]