contestada

Grace earns $7 for each car she washes. She always saves $21 of her weekly earnings. This week, she
wants to have at least $66 in spending money. How many cars must she wash?

Respuesta :

Answer: 13

Step-by-step explanation:

[tex]66\geq 7x-21[/tex]

add 21 both sides

[tex]87\geq 7x[/tex]

divide both sides by 7

[tex]12.4\geq x[/tex]

So more than 13 cars

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