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

Answer 1

http://learn.flvs.net/webdav/assessment_images/educator_algebra1_v10/09_00_64.jpg

Answer 2

that's the graph ^

Answer 3

(4 +2x)(3 + 2x) # 15

12 + 8x + 6x + 4x^2 = 15
4x^2 + 14x - 3 = 0

Answer 4

thanks

Answer 5

yw