the length of a rectangle is twice as long as it’s width. if the width of the rectangle is increased by 3 units and the length is unchanged, which equation represents the area, A, of the new rectangle in terms of its width, w?

320ft

step-by-step explanation:

120 divided by 3 equals 40

40 times 4=160

160 times 2=320

the equation of the parabola is y2=12x

explanation:

the vertex is midway between the focus ad the directrix

so, the vertex is (0,0)

let p=(x,y) be a point on the parabola.

the distance of p from the directrix is equal to the distance from the focus.

x+3=√(x−3)2+(y−0)2

(x+3)2=(x−3)2+y2

x2+6x+9=x2−6x+9+y2

y2=12x

graph{y^2=12x [-10, 10, -5, 5]}