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math

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the function f(d) = 2d + 5 represents the number of song downloads a person can get for d dollars. What is f(4)

  • math - ,

    f(d) = 2d + 5

    To find f(4), substitute 4 for d in the above equation.

    f(4) = 2*4 + 5
    f(4) = 13

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