CAN SOMEONE PLEAAAAAAASE EXPLAIN THIS Alexei wants to hang a mirror in his boat but the mirror and frame must not have an area larger than 19.25 square feet. The mirror is 3 feet wide and 5 feet long. Which quadratic equation represents the area of the mirror and frame combined? (The border must have equal width on each side.)
Let the width of frame be x, so on either side of mirror there is x ft of frame making entire mirror/frame with (3+2x) wide and (5+2x) long................Area of mirror/frame is (3+2x)*(5+2x) which equals 19.25.
So I get (3+2x)(5+2x)=19.25 and all I have to do is solve it right?
Yes, but you are going to have to use the quadratic formula.
yes..distribute or FOIL, then set equal to zero, then use quadratic formula
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