Posted by **sharday** on Friday, May 24, 2013 at 10:02am.

1. Find the average rate of change of f(x)=x^3-9x+9:

a) from -8 to -2

b) from -1 to 1

c) from 1 to 4

a) what is averge rate of change of f (x) =x^3-9x+9 from -8 to -2?

- algebra -
**Reiny**, Friday, May 24, 2013 at 11:15am
I will do a) , you do the others in the same way

f(x) = x^3 - 9x + 9

f(-2) = -8 + 18 + 9 = 19

f(-8) = -512 + 72 + 9 = -431

avg rate of change

= (f(-2) - f(-8) )/(-2 - (-8))

= (19 - (-431))/(-2 - (-8))

=450/6

= 75

- Bridesmaid Dresses: Spring/Summer 2014 Styles From -
**Bridesmaid Dresses: Spring/Summer 2014 Styles From**, Tuesday, June 4, 2013 at 5:37pm
<strong>Bridesmaid Dresses: Spring/Summer 2014 Styles From Top Designers (PHOTOS)</strong></br>

Who

## Answer this Question

## Related Questions

- calculus - Find the average rate of change f(x)=x^3-8x+9 a. from -3 to -2 b. ...
- Calculus - for f(x)=-x^2 +1, which value is the largest magnitude? a) average ...
- Math - Could someone help me with these questions, I don't know question c) and ...
- Math~Reinyyy - Could someone help me with these questions, I don't know ...
- ---college algebra (average rate of change)--- - Find the average rate of change...
- calculus (rate of change) - consider the function f(x)=x^2-6x+12 a. find the ...
- Calulus - Consider the following function. f(t) = 3t2 − 3 (a) Find the ...
- calculus - i'm not sure how to do this. can someone help, please? thanks! ...
- ---college algebra (average rate of change)--- - If the average rate of change ...
- calculus - You are working as assistant to a major movie producer from Hollywood...

More Related Questions