Which student correctly translated the phrase “twice the sum of a number cubed and nine” and evaluated it for r = 3?

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).

answer: approximately 2.878

step-by-step explanation:

you multiply 11 and pi (3.14) then after you have 34.54. the final step is to divide by 12. the final answer is approximately 2.878