Answer: C is the correct option.
Step-by-step explanation:
Let x represent the number of hours for which a car share is used with either company A or company B.
Company A charges a $110 annual fee plus a $10/hr car share fee. This means that the total cost of using x hours of car share with company A is
10x + 110
Company B charges $125 plus $7/hr. This means that the total cost of using x hours of car share with company B is
7x + 125
For the minimum number of hours that a car share needs to be used per year to make Company B a better deal, then
10x + 110 ≥ 7x + 125
10x - 7x ≥ 125 - 110
3x ≥ 15
x ≥ 15/3
x ≥ 5
