math(rate of change)

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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) -

    I assume you are not a calculus student.

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

  • math(rate of change) -

    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 couldn't thank you again!

  • math(rate of change) -

    how did it become 48?

  • math(rate of change) -

    f(6) = 6^2 + 2(6) = 36+12 = 48

  • math(rate of change) -

    {{{(f(6) - f(0))/(6-0) = (6^2 + 2*6 - 0^2 - 2*0)/6 = 48/6 = 8}}}

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