Let us begin by writing the given information
It takes him 15 min to do an oil change and 24 min to do a tire change
x is the number of oil changes he does and y is the number of tire changes
The number of minutes he take him to do x oil changes is:
[tex]=\text{ 15x minutes}[/tex]
The number of minutes he takes him to do y tire changes is:
[tex]=\text{ 24y minutes}[/tex]
The inequality that describes how many oil changes and tire changes Ahmed can do in 180 minutes is:
[tex]15x\text{ + 24y }\leq\text{ 180}[/tex]
Whenever we use the word 'at most', we are saying that the maimum number of minutes is 180 but it can be less.
Answer:
[tex]15x\text{ + 24y }\leq\text{ 180}[/tex]
