Jimmy decides to mow lawns to earn money. The initial cost of his lawnmower is $250. Gasoline and maintenance costs are $6 per lawn. a) Formulate a function C(x) for the total cost of mowing x lawns.

b) Jimmy determines that the total-profit function for the lawnmowing business is given by P(x)x. Find a function for the total revenue from mowing x lawns. How much does Jimmy charge per lawn?

c) How many lawns must Jimmy mow before he begins making a profit?