Need help figuring out out function story problems

Supposed you are considering a lawn mowing business next summer. Your mower consumes 0.?5 gals of gas per hour. It is an older mower so it will break down regularly, so you decide you will need to set aside $35 per month for parts. Gasoline currently costs $3 per gallon. If a standard sized yard takes you 30 minutes to mow, answer the following questions. a. Create a mathematical equation to describe your costs per month. b. Create an equation to describe your revenue (how much you make) for a yarying number of jobs. c. Create an equation to describe the profits of the business [profit = revenue costs). d. What should you charge if you had 10 yards per month to breakeyen? What about to make $300 in profit? What about to double your costs