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Nonlinear Functions

SAT Math· difficulty 3/5

Which function represents exponential decay?

  • A

    y=5⋅1.2xy = 5 \cdot 1.2^x

  • B

    y=5x2y = 5x^2

  • C

    y=5−0.8xy = 5 - 0.8x

  • D

    y=5⋅0.8xy = 5 \cdot 0.8^x

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Explanation

Exponential decay has base between 0 and 1.

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