Find the average rate if change in the function f(x) = x^2 +2 over the interval x= -5 to x= -2

If f(x) = x^2 +2 and 5<= x <= -2 :

F(-5)=(-5)^2+2=25+2=27

F(-4)=(-4)^2+2=16+2=18

F(-3)=(-3)^2+2=9+2=11

F(-2)=(-2)^2+2=4+2=6

Average =

(27+18+11+6)/4

=62/4

=15.5

Hope this helps

what is a pre-existing condition claus?

means if you're already damaged some way when you take out a medical insurance you will not get full compensation for that injury that you already have.

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