A certain blueprint shows two fences. Fence A is 1 1/4 long but is 1 7/8 inches long on the blueprint . What is the unit rate for inches per yard on this blueprint? If fence B is 4 yards long, how long is fence B on the blueprint?

Answer If fence B is 114 yards long IRL and 112 in blueprint, then that means that every 114 yards, it's substracted 2, or every 57 it's substracted 1.

So 5 / 57  =  0.08771929824

You substract: 5 - 0.08771929824  =  4.91071428572

Simplified it's 4.91 Yards

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this