9.2.1 Review Preview (Does surface area affect volume?)

9-43: Red Apples cost $1.20 per pound, and green apples cost $1.50 per pound.

a. Write an expression to represent the total cost of x pounds of red apples and y pounds of green apples. (In your expression put x first!)

9-43: Red Apples cost $1.20 per pound, and green apples cost $1.50 per pound.

b. What is the total cost if you buy 3 pounds of red apples and 2 pounds of green apples? (don't forget your $ sign)

9-44: Ellen is building a scale model of a space shuttle. A space shuttle is approximately 122 feet long and has a wingspan of 78 feet.

a. How many inches long is the space shuttle? (label)