133k views
2 votes
What is (fog)(x)?
f(x) = x?
g(x) = 3x + 3

User Philomory
by
4.2k points

2 Answers

3 votes

Answer:

3x + 3

Explanation:

Substitute x = g(x) into f(x) , that is

f(3x + 3) = 3x + 3

User Aswin P Ashok
by
3.7k points
4 votes

Answer:Set up the composite result function.

f

(

g

(

x

)

)

Evaluate

f

(

g

(

x

)

)

by substituting in the value of

g

into

f

.

f

(

3

x

3

2

)

=

3

(

3

x

3

2

)

3

Simplify each term.

f

(

-

3

x

3

2

)

=

9

x

3

+

6

3

Subtract

3

from

6

.

f

(

3

x

3

2

)

=

9

x

3

+

3

Explanation:

sorry for how it came out

you can also just resuch up g(x)=3x+3

User Ankit Vadariya
by
4.3k points