8 divided by the sum of 9 and 3?
6 divided by the sum of 7 and 6?

1. 0.66666666666

2. 0.46153846153

Step-by-step explanation:

8 divided by the sum of 9 and 3 is basically just 8 / ( 9 + 3 )

6 divided by the sum of 7 and 6 is basically just 6 / ( 7 + 6 )

yes

step-by-step explanation:

yes

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).