Answer:
Step-by-step explanation:
(f g)(x) is equal to f(x) times g(x). So you just need to multiply both of the equations together. Use the foil method to multiply (x+2)(x-4)
I have attached an image to better explain the foil method
a= 32 degrees
b= 148 degrees
c= 82 degrees
12 meters i think but I may be wrong