Create an equivalent expression that includes a set of parentheses that make the value of the expression 13. Remember, you can have two or more numbers within the set of parentheses. 1/2 X 12 + 2 -2 + 11

idk

step-by-step explanation:

maybe try   if it is work from a book, if not try

what is the question?

step-by-step explanation:

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).