5. (8 points) The results of a poll show that between 43% and 55% of the population support an increase in sales tax to pay for a new sports stadium.

a) What is the point estimate?

b) What is the margin of error?

it could 14.28 but if its not that one then it has to be the 17 one. hope this ! : )

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).

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step-by-step explanation:

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