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?

3 answers

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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