For each of the coins you selected, identify P and r, then set up an equation to find the value of the coin at any t. Coin A is worth $25 with an annual appreciation rate of 7%
Coin B is worth $40 with an annual appreciation of 5%

answer: your correct answer is b. d.

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).

i'm not really sure how to answer that

step-by-step explanation: