3. Rectangle A measures 16 inches by 8 inches. Rectangle B is a scaled copy of Rectangle A. Select 2 of the measurement pairs that could be the dimensions of Rectangle B.
a. 4 inches by 2 inches
b. 12 inches by 4 inches
C. 20 inches by 12 inches
d. 40 inches by 20 inches
e. O inches by 30 inches

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

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).