What is the average rate of change for ƒ(x) = −3x + 1 over the interval −2 ≤ x ≤ −1?

The average rate of change is -3

Step-by-step explanation:

we have

This is a linear function in slope intercept form  

where

m is the slope

b is the y-intercept

In this problem

The slope is equal to

Remember that

In a linear function the average rate of chance is a constant and is equal to the slope of the linear function in any interval

therefore

The average rate of change is -3

its 69.420

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!