A homeowner measured her rectangular backyard as having a length of 40 yards and a width of 25 yards. Her measurements were accurate to the nearest yard. What is the range of possible values for A the actual area in square yards of her backyard?
A. 936 < A < 1,066
B. 967.75 < A < 1,032.75
C. 999 < A < 1,001
D. 999.5 < A < 1,000.5

s

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).

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64