Answer:
The cost of installing a strip of wallpaper around the room would be $100.80
Explanation:
1. The formula for a rectangle's area is A = l x w. The "l" means length and the "w" means width. 14 is the length and 10 is the width, so that should leave you with A = 14 x 10.
2. When you multiply 14 by 10, you should get A = 140.
3. Since wallpaper costs $0.72 per foot, all you want to do is multiply 140 by $0.72 and you should end up with $100.80 as a result.
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