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Nonlinear Functions

SAT Math· difficulty 4/5

A drug decays continuously losing 20% per hour. After 3 hours, what percent of the original remains?

  • A

    40%40\%

  • B

    60%60\%

  • C

    51.2%51.2\%

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  • D

    48%48\%

Explanation

(0.8)3=0.512=51.2%(0.8)^3 = 0.512 = 51.2\%.

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