Using C as the y component and n as the x component, draw the
graph of the cost function. C=130,000 + 6.5n
(C in $100,000 increments) (n in 1000 increments)
For example, if C = $250,000 and n = 1500 books, the point drawn
would be (n, C) = (1.5, 2.5) on the graph.
