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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?

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?
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1 vote
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?

asked
User Axiomer
by
9.1k points

1 Answer

2 votes

Answer: 13

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

answered
User Scottshepard
by
8.5k points
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