I don't know what is between f(x) and g(x), so (for now) there are two posible answers:
1.

- function multiplication:

2.

- function composition:
the have identical length so to know the length of each pipe you should divide 22.4 by 7
22.4 / 7 = 3.2
Answer:
1.-9x^2
2.16x^4
3.x^2+4x
4.x^2+4x+4
5.x^2-x-12
6.x^4+2x^3-4x^2
Step-by-step explanation:
Answer:
2.8
Step-by-step explanation:
using cosine rule
= 
s =
= 2.842 = 2.8