Rectangle has an area of x2 + 3x — 4 and a width of x— 1. What is the length of the rectangle?

x+4

Step-by-step explanation:

If you plug in the answer choices (x+4, x-4, x+2, x-2) into (x-1) (insert solution), x+4 gives you x^2+3x-4. :)

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