Question

MEDAL--*please help!* question in pic file below

Answer 1

Use
\[
h'(x)=3 f'(3 x) g'(f(3 x))
\]

Answer 2

Apply the Chain Rule

Answer 3

can you please show me the steps

Answer 4

If you have u= w ( v(x)), then u'(x) = v'(x) w'(v(x))

Answer 5

So if r(x)= s(3x), then r'(x)= 3 s'(3x)

Answer 6

Try to use these steps to get to my formula above

Answer 7

The rest is easy and I believe the final answer should be 15

Answer 8

awesome thank you!!!

Answer 9

YW

Answer 10

i tagged u in another question