Question

MULTI-STEP PROBLEM You are buying a tank for three fish. You have a

flame angel that is 3.5 inches long, a yellow sailfin tang that is 5.5 inches
long, and a coral beauty that is 3 inches long. The area (in square inches)
of water surface the fish need is given by the expression 12f where fis the
sum of the lengths (in inches) of all the fish in the tank.
a. What is the total length of the three fish?

Answer 1

a) 12 inches

b) 144 square inches

Explanation:

The complete question has 2 parts to answer:

a. What is the total length of the three fish?

b. How many square inches of water surface do the fish need?

Lets answer:

a)

The total length of three fish are the sum of all the individual fishes' length.

1st is 3.5 in

2nd is 5.5 inches

3rd is 3 inches

Sum is:

3.5 + 5.5 + 3 = 12 inches

f is 12

b)

The expression
`12f` gives the total area. We already found f = 12, now the area is:

Area = 12f

Area = 12 * 12

Area = 144 sq. in.