Francis teaches the piano. he charges each student an enrollment fee of $100 plus $15 per hour of piano lessons. the average cost of lessons for a student per hour is $25.

if h represents the number of hours a student spends in lessons, which equation can be used to find the value of h?

The answer will the answer on the top $25=$100+$15h over h

The first one should be right. Since the teacher is charging $15 per hour of the piano lesson then it can't be any of the answers of $100h. The answer can't be C, the third one, since you're adding the enrollment fee to the cost of every piano lesson it would be wrong to subtract the $100. Hope that helps