30. When Alex joined a discount CD club, he was allowed to buy 10 CDs at $0.50 each. If he buys one CD per month for the next year at $14.95 each plus $3.70 shipping and handling, what will be the average price for all the CDs he purchased?

step-by-step explanation:

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval

it would open into a square depending on the type of envelope i’m not sure about the second part

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).