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lexigolds9

  • 3 years ago

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

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  1. myininaya
    • 3 years ago
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    \[\frac{f(4)-f(2)}{4-2}\]

  2. lexigolds9
    • 3 years ago
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    what do the fs stand for? i get the bottom will be 2

  3. myininaya
    • 3 years ago
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    Well you have \[f(x)=5x^2-2 \]

  4. myininaya
    • 3 years ago
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    \[f(4)=5(4)^2-2 \text{ and } f(2)=? \text{ I will let you say what } f(2) \text { is } \]

  5. lexigolds9
    • 3 years ago
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    5(2)^2

  6. lexigolds9
    • 3 years ago
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    -2

  7. lexigolds9
    • 3 years ago
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    60/2 ??????????

  8. lexigolds9
    • 3 years ago
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    or 30/1 simplied. cause they are asking simplified answer.

  9. lexigolds9
    • 3 years ago
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    or just 30. am i right

  10. myininaya
    • 3 years ago
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    Yes 60/2 does equal 30

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