7. The weekly cost for Apple to produce x number of Macbooks is given by. C(x) = 0,000004x3 - 0.04x3 + 140x + 60,000 Apple has also determined that the quantity demanded x of these Macbooks is related to the wholesale unit price p by the equation: p = 5000 - 0.04x a. Find the average cost function, b. Find the revenue function. C. Find the marginal revenue function, d. Compute the marginal revenue for 20,000 Macbooks (label units ). e. Find the demand for Macbooks when the price is set at $1, 200 48 - 11 are below.keep going