1-25. Given f(x) =- 2/3x +3 and g(x) = 2×2 – 5, complete parts (a) through (f). Homework Help a. Calculate f(3). b. Solve

Question

1-25. Given f(x) =- 2/3x +3 and g(x) = 2×2 – 5, complete parts (a) through (f).
Homework Help
a. Calculate f(3).
b. Solve f(x)=-5.
C. Calculate g(-3).
d. Solve g(x)=-7.
e. Solve g(x)=8.
f. Solve g(x)=9.

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Thành Công 3 years 2021-09-04T18:06:33+00:00 1 Answers 3 views 0

Answers ( )

  1. phucdien
    0
    2021-09-04T18:08:23+00:00
    Reply

    Answer:

    When f or g are equivalent to a number you are solving for x. For example b, d, e, f. In the equation g(x) =2×2-5 I assumed 2 was a typo. So, if it’s incorrect, please use same steps and just adjust the solution.

    Step-by-step explanation:

    f(x)=-\frac{2}{3x}+3

    a) f(3)=-\frac{2}{2(3)} +3

               =-\frac{1}{3}+3 =\frac{-1+6}{3} =\frac{5}{3}

    b) f(x)=-5

          -5=-\frac{2}{3x}+3

          -8=-\frac{2}{3x}

      -24x=-2

            x=\frac{1}{12}

    g(x)=2x-5

    c) g(-3)=2(-3)-5

                   =-6-5

                   =-11

    d) g(x)=-7

          -7=2x-5

          -2=2x

            x=-1

    e) g(x)=8

            8=2x-5

           12=2x

            x=6

    f)  g(x)=9

             9=2x-5

            11=2x

             x=\frac{11}{2}

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )