4d
10-5x8 10.40 361
5. Describe the steps you would use to evaluate the expression: 2(3x + 1)2 ifx-2 (you do NOT need to solve),
6. You can estimate the distance (in centimeters) that a leopard frog can jump using the expression 13f where
f is the frog's length (in centimeters). What distance can a leopard frog that is 12.5 centimeters long jump?
7. You are buying a fish tank for three fish. You have a flame angel fish that is 3.5 inches long, a yellow sailfin
tang that is 5.5 inches long, and a coral beauty fish that is 3 inches long. The area (in square inches) of water
surface the fish need is given by the expression 12f where f is the sum of the lengths (in inches) of all the fish
in the tank.
a. What is the total length of the three fish? Which variable did you just solve for?
b. How many square inches of water surface do the fish need?
8. You join an online music service. The total cost (in dollars) of downloading 3 singles at $.99 each and 2
albums at $9.95 each is given by the expression 3.0.99 +2.9.95.
a. Find the total cost.
b. You have $25 to spend. How much will you have left?