Question

The equation A = x(x - 7) describes the area, A, of a rectangular flower garden, where x is the width in feet.

What would be the width in feet of the flower garden if the area is 8 square feet?

A. 9

B. 1

C. 8

D. 7

Answer 1

x(x-7)=8

x^2-7x-8=0

(x-8)(x+1)=0

so x=8 (and -1 but width can’t be negative)

So your answer is C. 8