Question

Use the function to answer the question.
f(x)=3x; g(x)=4x^2 + 1
Which is equal to (f○g)(x)?

a.12x^3+3x
b. 12x^2 +3
c.36x^2 +1
d.4x^2 + 3x+1

Answer 1

f0g(x)= f[g(x)]
= f[4x^2+1]

Answer 2

= 3[4x^2+1]

Answer 3

so f0g(x)=
3(4x^2+1)
= 3(16+1)?
= 3(17)
= 51?

Answer 4

is there any x value given

Answer 5

no.

Answer 6

so ,
12x^2+3

Answer 7

B is the answer

Answer 8

is it clear

Answer 9

because you multply 4 times 3 which gave you 12x^2. then 1 times 3 equal 3. I see now. Thank you

Answer 10

ok, it's alright