You are wallpapering two walls of a child's room. One wall measures 9 ft by 8 ft, and the other measures 7 ft by 8 ft. The wallpaper costs $32.00 per roll, and each roll of wallpaper will cover 32 ft². What is the cost to wallpaper the two walls?

Question

Quizplus · Accepted Answer

First, find the total area of the walls that need to be wallpapered.

For the first wall: 
9 ft x 8 ft = 72 sq ft

For the second wall: 
7 ft x 8 ft = 56 sq ft

Total area = 72 sq ft + 56 sq ft = 128 sq ft

Since each roll of wallpaper covers 32 sq ft, you will need: 
128 sq ft / 32 sq ft per roll = 4 rolls

The cost of 4 rolls of wallpaper is: 
4 rolls x $32.00 per roll = $128.00

Therefore, the best choice is D, $128.00.

You Are Wallpapering Two Walls of a Child's Room