Sarah wants to hang a mirror in her room but the mirror and frame must not have an area larger than 15 square feet. The mirror is 3 feet wide and 4 feet long. Which quadratic equation represents the area of the mirror and frame combined? (The frame must have equal width of x on each side.)

3x2 + 14x − 2 = 0

4x2 + 14x − 3 = 0

x2 + 12x − 14 = 0

2x2 + 7x − 14 = 0

Question

Sarah wants to hang a mirror in her room but the mirror and frame must not have an area larger than 15 square feet. The mirror is 3 feet wide and 4 feet long. Which quadratic equation represents the area of the mirror and frame combined? (The frame must have equal width of x on each side.)



 3x2 + 14x − 2 = 0

 4x2 + 14x − 3 = 0

 x2 + 12x − 14 = 0

 2x2 + 7x − 14 = 0

anonymous · Answer

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