Given that f(x) = 2x + 5 and g(x) = x − 7, solve for f(g(x)) when x = −3
2 answers:
Answer:
-15
Step-by-step explanation:
start from the inside and go out.
So first plug in -3 into g(x)
g(-3) = -3 - 7 = -10
then plug in -10 into f(x)
f(-10) = 2(-10) + 5 = -15
so f(g(x)) = -15
Answer:
<h3>The answer is - 15</h3>
Step-by-step explanation:
f(x) = 2x + 5
g(x) = x − 7
To find f(g(x)) substitute g(x) into f(x) that's replace every x in f(x) by g(x)
That's
f(g(x)) = 2(x - 7) + 5
= 2x - 14 + 5
f(g(x)) = 2x - 9
When x = - 3
Substitute - 3 into f(g(x))
That's
<h3>f(g(3)) = 2(-3) - 9 = - 6 - 9 = - 15</h3>
Hope this helps you
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