Question

The perimeter of a rectangle is represented by the expression 6x + 4. If the width of the rectangle is represented by the expression x – 1, which expression represents the length?

Answer 1

2x+3 or C

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Answer 2

Divide the perimeter by 2:

6x + 4 / 2 = 3x+2

This is one length plus one width.

Now subtract the width to find the length:

3x +2 - x-1 = 2x+ 3

Length is 2x+ 3