Profit Functions A company has a fixed cost of $31,000 and a production cost of $7 for each unit it manufactures. A unit sells for $11. Find the following functions (in dollars). (a) What is the cost function? C(x) = (b) What is the revenue function? R(x) = (c) What is the profit function? P(x) = (d) Compute the profit (loss), in dollars, corresponding to the following production levels. P(5,700) = $ P(8,600) = $ P(12,400) = $