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24 August, 03:29

When graphed, which function has a horizontal asymptote at 4?

A. f (x) = 2 (3^x) + 4

B. f (x) = 2x-4

C. f (x) = -3x+4

D f (x) = 3 (2^x) - 4

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  1. 24 August, 06:53
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    A. f (x) = 2 (3^x) + 4

    Step-by-step explanation:

    The linear equations of answer choices B and C will not have a horizontal asymptote. The exponential equation of choice D will have a horizontal asymptote at y=-4.

    The appropriate choice is the exponential equation with 4 added:

    f (x) = 2 (3^x) + 4
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