Question

Alexei wants to hang a mirror in his boat, and put a frame around it. The mirror and frame must have an area of 19.25 square feet. The mirror is 3 feet wide and 5 feet long. Which quadratic equation can be used to determine the thickness of the frame, x?

2x2 + 8x - 19.25 = 0
3x2 + 5x - 19.25 = 0
4x2 + 16x - 4.25 = 0
4x2 + 16x + 15 = 0

Answer 1

@jcoury

Answer 2

The first part is already in squared terms. "19.25 sq ft"

Taking the measurements for the mirror 3ft and 5ft, you'd get: "15 sq ft."

Subtract that answer from the previous number to get "4.25 sq ft."

And you should get C (just by looking at the answers lol).

Answer 3

c is the answer