Question

The function f is defined by
f(x) = 2x^2 + 4

Find
f(3x)

Answer 1

@amistre64 @jdoe0001

Answer 2

replace every x with 3x

then simplify

Answer 3

f(x) = 2x^2 + 4

f(3x) = 2(3x)^2 + 4

f(3x) = ??

Answer 4

6x^2 +4

Answer 5

what is (3x)^2 equal to?

Answer 6

9x^2

Answer 7

f(x) = 2x^2 + 4

f(3x) = 2(3x)^2 + 4

f(3x) = 2(9x^2) + 4

f(3x) = ??

Answer 8

18x^2 +4

Answer 9

correct

Answer 10

thank you =)

Answer 11

you're welcome