Question

Given that f(x) = x^2 + 2x + 3 and g(x) = (x+4)/3, solve for f(g(x)) when x = 2

Answer 1

@SolomonZelman

Answer 2

plug x = 2 in the formula for g(x) and work it out
then plug the result of your calculation into the formula for f(x)

Answer 3

first part is (2 + 4)/3 = ?

Answer 4

2

Answer 5

@welshfella

Answer 6

right

now plug x = 2 into x^2 + 2x + 3

and work it out
that will be your answer

Answer 7

2^2 + 2(2) + 3

Answer 8

okay I got 11

Answer 9

yes

Answer 10

thanks : )

Answer 11

f(g(x)) means 'the value of g(x) is placed into f(x)'
the x in f(x) gets replaced by the value of g(x)