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Math Help - Simple Pre-Calc

  1. #1
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    Simple Pre-Calc

    Find an exponential finction having the given values

    f(0)=5, f(3)=40





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  2. #2
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    y = a \cdot b^x

    5 = a \cdot b^0

    a = 5

    y = 5 \cdot b^x

    40 = 5 \cdot b^3

    8 = b^3

    b = 2

    y = 5 \cdot 2^x
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  3. #3
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    thank you!
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