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posted by Jab on Monday, October 24, 2011 at 5:44pm.

4. WALLPAPER A decorative wallpaper strip has an area of 50 + 20r. If the width of the strip is 5 inches, what expression represents the length of the strip? So far I have that their GCF is 5?

OK, you got that far, so factor out the 5 50+20r = 5(10+4r) Since the width is the 5, the length is 10+4r area = width * length

100 + 40r

n^2-12+4n

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