lexigolds9
the average rate or change of f(x)=5x^2  2, from 2 to 4



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myininaya
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\[\frac{f(4)f(2)}{42}\]

lexigolds9
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what do the fs stand for? i get the bottom will be 2

myininaya
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Well you have \[f(x)=5x^22
\]

myininaya
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\[f(4)=5(4)^22 \text{ and } f(2)=? \text{ I will let you say what } f(2) \text { is } \]

lexigolds9
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5(2)^2

lexigolds9
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2

lexigolds9
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60/2 ??????????

lexigolds9
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or 30/1 simplied. cause they are asking simplified answer.

lexigolds9
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or just 30. am i right

myininaya
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Yes 60/2 does equal 30