Posted by **ash** on Saturday, April 9, 2011 at 8:02pm.

find the average rate of change

f(x)=x^2 + 2x between x=0 and x=6

can anyone please help me explain why the answer is 8?

thank you!

- math(rate of change) -
**bobpursley**, Saturday, April 9, 2011 at 9:08pm
I assume you are not a calculus student.

avg rate= (f(6)-f(0))/(6-0)=(48-0)/6=8

- math(rate of change) -
**ash**, Saturday, April 9, 2011 at 9:24pm
nope im not :( and my teacher doesn't explain well...thank you! i've been trying to figure out how to come up with the asnwer but gosh i couldnt thank you again!

- math(rate of change) -
**ASH**, Saturday, April 9, 2011 at 9:53pm
how did it become 48?

- math(rate of change) -
**Damon**, Sunday, April 10, 2011 at 5:21am
f(6) = 6^2 + 2(6) = 36+12 = 48

- math(rate of change) -
**bianca**, Sunday, April 10, 2011 at 4:45pm
{{{(f(6) - f(0))/(6-0) = (6^2 + 2*6 - 0^2 - 2*0)/6 = 48/6 = 8}}}

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