shemarmoss
shemarmoss shemarmoss
  • 03-07-2019
  • Mathematics
contestada

Let f(x) = 4x - 7 and g(x) = 2x - 3. Find (fog)(4).

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MathPhys
MathPhys MathPhys
  • 03-07-2019

Answer:

13

Step-by-step explanation:

(f∘g)(4) is another way of writing f(g(4)).

First, find g(4).

g(x) = 2x − 3

g(4) = 2(4) − 3

g(4) = 5

Now substitute into f(x).

f(x) = 4x − 7

f(g(4)) = 4g(4) − 7

f(g(4)) = 4(5) − 7

f(g(4)) = 13

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konrad509
konrad509 konrad509
  • 03-07-2019

[tex](f\circ g)(x)=4(2x-3)-7=8x-12-7=8x-19\\\\(f\circ g)(4)=8\cdot4-19=13[/tex]

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