Question

Grace earns 7 dollars for each car she washes. She always saves 25 dollars of her weekly earnings. This week, she wants to have at least 65 dollars in spending money. How many cars must she wash? Write and solve an inequality to represent this situation. Interpret the solution in context.I know the answer is 12.9< or equal to c, but how do I interpret it? Is it Grace must wash at LEAST 13 cars,or at MOST 13 cars?

Answer 1

7c ≥ 65+25

7c ≥ 90

c ≥ 13

She has to wash at least 13 cars.