Which best proves why the expressions 4(x+3)+2x and 6(x+2) must be equivalent expressions? When x= 3, both expressions have a value of 30.
O When x = 5, both expressions have a value of 42.
When x = 1, both expressions have a value of 18, and when x-8, both expressions have a value of 60.
O When x=2both expressions have a value of 15, and when x - -6, both expressions have a value of 39.

69.64%

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).