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August 21, 2014

August 21, 2014

Posted by **courtney** on Wednesday, March 27, 2013 at 1:49am.

f(x)=x^3-5x+3:

a. from -6 to -3

b. from -1 to 2

c. from 2 to 8

I am so lost, can someone please show me how to do this?

- pre calculus -
**Reiny**, Wednesday, March 27, 2013 at 8:02amI will do the first, you do the other two....

f(-3) = -27 + 15 + 3 = -9

f(-6) = -216 + 30 + 3 = -183

so avg rate of change = (-9 - (-183))/(-3-(-6))

= 174/3 = 58

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