Ace Appliances charges a $45 fee plus $75 per hour for servicing refrigerators. Appliances Assessor charges a $60 fee plus $65 per hour. How many repair hours would make Appliances Assessor less expensive than Ace Appliances?

Question

noseboy908 · Answer

Ace's price is represented by the equation P=75x + 45. Appliances Assessor's price is represented by the equation P=65x + 60. Graph the two. One hour more than where the lines intercept is your answer.