Daniel and Karissa’s grandmother gave him $500 each for the birthday. Daniel deposited his is a bank that pays 5% simple interest. Karissa deposited hers in a bank that pays 4.5% interest compounded annually. In dollars and cents, what is the difference in the accounts after 4 years? (Real answers ASAP)

5/20 so 25%

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).