need help for problem number 3.

A technology company is about to launch a new product - a wi-fi capable home management system. The company had fixed costs of $1,315,000 in creating the product, and it costs the company $73.25 for each system it produces. The company is going to charge buyers $159 for the system. a. Write the revenue, cost, and profit functions (in simplified form). Be sure to label each function clearly b. Find the break-even point. c. If the company's costs are $2,084,125, how many systems were produced