A gutter with an open top is to be made by bending the edhes of a 16inch wide piece of almnum at right angles. write an expression for the width of the bottom of the gutter. I came up with 16-2x. Now i have to find pression for the area of the cross section of the gutter and write it in the form ax^2 + bx+c. I multiplied
x(16-2x) and got 16x-2x^2 +0 is that correct. i put it in order -2x^2+16x +0. now find the vertex by completing the square. Am i correct o far?

Question

A gutter with an open top is to be made by bending the edhes of a 16inch wide piece of almnum at right angles. write an expression for the width of the bottom of the gutter. I came up with 16-2x. Now i have to find pression for the area of the cross section of the gutter and write it in the form ax^2 + bx+c. I multiplied 
x(16-2x)  and got 16x-2x^2 +0  is that correct. i put it in order -2x^2+16x +0. now find the vertex by completing the square. Am i correct o far?

anonymous · Answer

Help please!