Steven wants to buy a $500 bicycle. steven has no money saved, but will be able to deposit $45 into a savings account when he receives his paycheck friday. however, before steven can buy the bike, he must give his sister $85 that he owes her. for how many weeks will steven need to deposit money into his saving account before he can pay back his sister and buy the bike?

12

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).