Use the circle to answer the questions The diameter is (A. 3.1 B. 5.4 C. 10.8 D. 16.2) cm.

The circumference in terms of Pi is (A. 5.4 B. 3.18 C. 10.8 D. 16.2) pi cm

Using 3.14 for Pi, the approximate circumference of the circle is (A. 10.8 B. 16.9 C. 32.4 D. 33.9)

Answer is in the photo. I can only upload it to a file hosting service. link below!

cutt.ly/zxt1ipy

493 would be the correct answer

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).