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Nonlinear Functions

SAT Math· difficulty 3/5

A drug's concentration decreases by 12% each hour. If the initial dose is 50 mg, which function models concentration in mg after tt hours?

  • A

    C(t)=50(1.12)tC(t) = 50(1.12)^t

  • B

    C(t)=50(0.12)tC(t) = 50(0.12)^t

  • C

    C(t)=50−0.12tC(t) = 50 - 0.12t

  • D

    C(t)=50(0.88)tC(t) = 50(0.88)^t

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Explanation

Decay factor 1−0.12=0.881 - 0.12 = 0.88.

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