Question

Tom wants to hang a mirror in his room. The mirror and frame must have an area of 14 square feet. The mirror is 3 feet wide and 4 feet long. Which quadratic equation can be used to determine the thickness of the frame, x?

4x2 + 14x - 2 = 0

3x2 + 10x - 14 = 0

2x2 + 12x - 14 = 0

x2 + 7x - 14 = 0

Answer 1

The answer to the problem is as follows:

Let the width of frame be x ' 

( 4 +2x ) ( 3+2x) = 14 

12 + 6x +8x +4x^2 = 14 

4x^2 +14x -2 = 0 

ANSWER is A)

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