A: you need to know how many cars you wash an hour. A reasonable amount would be five cars an hour making the equation 24•5=120$
B: you need to know how much the baking molds cost, a reasonable amount would be 7.50, the equation would be 7.50•5=37.5
Hope this helps
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so you have your two equations 3x+7=5x-23 and solve for x which is your "number" leaving the answer to be <u>x=15</u>
The answer is to solve each expression.