Michael is painting a cylindrical tank with a radius of 15 feet and a height of 60 feet. He must determine the surface area of the tank so that he knows how much paint to purchase. What is the surface area of the tank, rounded to the nearest whole number?

7069.5 ft^2

Step-by-step explanation:

Step one:

given data

dimension

radius of 15 feet

height of 60 feet

Required

The surface area of the tank

Step two:

substitute

A= 7069.5 ft^2

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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).