We have from the question the following information:
1. The football cleats cost $42.
2. Samantha makes $1.75 every time she washes the dishes.
We can write the next equation that represents this situation:
That is, Samantha, each time she washes the dishes right, she earns $1.75. We need to know how many times does she need to wash the dishes right? The answer is to solve the previous equation by 1.75 to both sides of it:
Therefore, Samantha needs to wash the dishes 24 times (right) to have the exact amount of money to buy the football cleats.