Assume that each row of the accompanying table has a linear cost function. Find (a) the co...

Assume that each row of the accompanying table has a linear cost function. Find (a) the cost function; (b) the revenue function; (c) the profit function; (d) the profit on 100 items. (See Example.)

Table

Example

A company manufactures a 42-inch plasma HDTV that sells to retailers for $550. The cost of making x of these TVs for a month is given by the cost function C(x) = 250x + 213,000.