Grace earns $7 for each car she washes. she always saves 25$ of her weakly earnings. this week, she wants to have at least $65 in spending money. how many cars must she wash? write and solve an inequality to represent this situation

6 cars

Step-by-step explanation:

To write an inequality, write an equation using an inequality sign. She needs to make at lest $65 then the sign must be greater than to ensure to gets that much or more than it.

She starts the week with $25. Then adds $7 for each car. This value is changing and is represented with a variable, 7x.

So the equation is 25+7x > 65.

To solve, use inverse operations like solving an equation:

25+7x>65

7x>40

rounded x>6

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