You saved up $15,000 to start a new business. This initial investment

covered your rent, labor, and patents. The supplies for each product cost you $7.00, and you are selling each product at $18. (Let x represent the number of products produced and sold.)

For this business venture:
a.    Write the cost function, C(x).
b.    Write the revenue function, R(x).
c.    Determine the break-even point. Describe what this means.