Mathematics

Quintin Powell

20 October, 14:17

At Teresa's auto shop, it takes her

15

minutes to do an oil change and

18

minutes to do a tire change. Let

x

be the number of oil changes she does. Let

y

be the number of tire changes she does.

Using the values and variables given, write an inequality describing how many oil changes and tire changes Teresa can do in less than

2

hours (

120

minutes).