Respuesta :

Answer:

9x+12y≤ 120

Step-by-step explanation:

Answer:

9x+12y ≤ 120

Step-by-step explanation:

Oil change takes 9 minutes and the number done is represented by x

Tire change takes 12 minutes and the number done is represented by y

She can work no more than 120 minutes

9x+12y ≤ 120