If f(x) = -7x+2 and g(x) = square root of x+3,
what is (fºg)(-2)?
2 answers:
Answer:
(fog)(-2)=-5
Step-by-step explanation:
Given
f(x)= -7x+2
and
g(x)= √(x+3)
For finding (fog)(-2), we have to find (fog)(x) first
In order to find (fog)(x) we will put the value of g(x) in f(x) in place of x.
(fog)(x)= -7g(x)+2
Putting the value of g(x)
(fog)(x)= -7√(x+3)+2
We have to find (fog)(-2), so we have to put at the place of x in the composition
(fog)(-2)= -7√(-2+3)+2
(fog)(-2)= -7√1+2
= -7(1)+2
= -7+2
=-5
So,
(fog)(-2)=-5
For this case we have the following equations:
We must find 
By definition of composition of functions we have to:

So:

Now, we find f (g (-2)):

ANswer:
-5
You might be interested in
Answer:
D
Step-by-step explanation:
Answer:
umm what or we doing?
Step-by-step explanation:
Answer:
i cant see the photos
Step-by-step explanation:
sorry talaga
Answer:
1. $58650
Step-by-step explanation:
Answer: 4 miles
Step-by-step explanation:
If Ashley ran 1 mile 4 times, she ran 1+1+1+1, or 1*4, or 4 miles.
<em>Hope it helps <3</em>