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Nonlinear Functions

SAT Math· difficulty 3/5

The horizontal asymptote of y=5⋅3x−2y = 5 \cdot 3^x - 2 is:

  • A

    y=5y = 5

  • B

    y=0y = 0

  • C

    y=3y = 3

  • D

    y=−2y = -2

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Explanation

As x→−∞x \to -\infty, 5⋅3x→05 \cdot 3^x \to 0, so y→−2y \to -2.

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