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 2 years ago
David wants to hang a mirror in his room but the mirror and frame must not have an area larger than 8 square feet. The mirror is 2 feet wide and 3 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.)
 2 years ago
David wants to hang a mirror in his room but the mirror and frame must not have an area larger than 8 square feet. The mirror is 2 feet wide and 3 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.)

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2016740e
 2 years ago
Best ResponseYou've already chosen the best response.0A:2x^2+14x2=0 B:3x^2+10x8=0 C:4x^2+10x2=0 D:x^2+7x8=0

kevsturge
 2 years ago
Best ResponseYou've already chosen the best response.0The answer is C because \[(2x+2)(2x+3)=8\rightarrow4^2+10x+6=8\] \[4x^2+10x2=0\]
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