Question

Company A charges a $125 annual fee plus $7 per hour car share fee.

Company B charges $110 plus $10 per hour. What is the minimum number of
hours that a car share needs to be used per year to make company A a better
deal?
A. 6
O Ο Ο
B. 5
C. 9
D. 11
SUBMIT
PREVIOUS

Answer 1

6 hours

Explanation:

A: y=125+7x

B: y=110+10x

for A to be a better deal than B, 125+7x<110+10x has to be true

• subtract 7x from both sides and subtract 110 from both sides of the inequality: 15<3x
• divide by 3: 5<x
• so x has to be greater than 5, im pretty sure it's 6 hours but it might also be 5 depending on how it's taught for you

Answer 2

B 5

Explanation:

Company A

total cost = 125+7h where h is the number of hours

Company B

total cost = 110 + 10h where h is the number of hours

125 + 7h < 110 + 10h

Subtract 7 h from each side

125 + 7h-7h<110+10h-7h

125 < 110+3h

Subtract 110 from each side

125-110< 110+3h

15 <3h

Divide by 3

15/3 <3h/3

5 <h

More than 5 hours