Pls help.
The owners want to raise the prices by 15 percent.
What should the new prices be?

multiply by 115% / 1.15

Step-by-step explanation:

because he wants to rise so we take the original price (100%) and add 15% to it

adult : 20.585

Child : 11.155

Student : 17.71

Family : 56.925

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).