21. 22. A casino wants to determine how much of an income stream comes from a certain slot machine. Suppose that money ows continuously into one of the slot machines and grows at a rate (in thousands of dollars) given byA '(t) = 0.1030'1' , where t is time in hours. Find the total amount that accumulates in the slot machine during its rst 10 hours of operation, if no money is paid out. (15 pts) The cost for producing at-screen televisions can uctuate depending on parts supplies, price of transportation, and other factors. Suppose that the marginal cost in dollars for making at- screen televisions is given by C '(x) = 400 + x + 0.3x2, where x is the number of units. What is the average value per television of C(x) for 2 to 12 at-screen televisions? (18 pts)