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tester [92]
4 years ago
13

Amy makes a rectangular poster with an area of 21+28m square inches. The width of the poster is 7 inches as shown in the followi

ng diagram. What is the length of the poster?

Mathematics
1 answer:
Lesechka [4]4 years ago
8 0
You could use simple factoring to solve this. You would factor out a 7 and then have

7(3+4m) = A

l x w = A

w= 3 +4m
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