Question

Grace earns $7 for each car she washes. She always saves $21 of her weekly earnings. This week, she

Answer 1

Answer: 13

Step-by-step explanation:

$66\geq 7x-21$

add 21 both sides

$87\geq 7x$

divide both sides by 7

$12.4\geq x$

So more than 13 cars