10. The amount of people using a certain product can be modeled by P = 85(1.2) where t is the number of years since the product was fi

Question

10. The amount of people using a certain product can be modeled by P = 85(1.2) where t is the
number of years since the product was first released. What is the growth rate?
A) 2%
B) 20%
C) 120%
D) 12%

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Thái Dương 6 months 2021-07-24T11:21:00+00:00 1 Answers 3 views 0

Answers ( )

  1. diemkieu
    0
    2021-07-24T11:22:43+00:00
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    Answer:

    B) 20%

    Step-by-step explanation:

    Exponential equation:

    An exponential equation is given by:

    A(t) = A(0)(1+r)^t

    In which A(0) is the initial amount and r is the growth rate, as a decimal.

    In this question:

    P(t) = 85(1.2)^t

    Growth rate:

    We want to find r, so:

    1 + r = 1.2

    r = 1.2 - 1 = 0.2

    The growth rate is of 0.2 = 2%, and the correct answer is given by option B.

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