Nonlinear Functions

SAT Math· difficulty 2/5

A bacteria culture doubles every 4 hours. If 200 bacteria are present at noon, how many will be present at 8 PM that day?

  • A

    400

  • B

    800

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  • C

    600

  • D

    1600

Explanation

8 PM is 8 hours later = 2 doubling periods. 20022=800200 \cdot 2^2 = 800.

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