Jimmy owns a small engine repair business. The revenue, in dollars, can be modeled by the equation y = 420 + 72x, where x is the number of hours spent repairing small engines. The overhead cost, in dollars, can be modeled by the equation y = 24x² + 180 where x is the number of hours spent repairing bikes.

After about how many hours does the company break even?

Note: The phrase break even refers to the value where the two functions are equivalent.


1 h

5 h

2 h

10 h