Help with functions

I can't make out (a), but here's (b).....

g(f(-2)).......let's look at the f(-2) part, first.....this says  to look for the associated y value where the x value for "f" = -2

So..... we go to x = -2 on the graph  and look at the y value there for the graph of "f"...this is = 1 .......so  f(-2) = 1   ....this makes sense.......(-2, 1)  is a point on "f".......when x = -2, y = 1  ....!!!

And now we have  g(f(-2)) =  g(1)

And now we do the same thing, again.....we look at the graph of g where x = 1 and find the associated y value.....so......when the x value for "g" = 1, the associated y value  = 5

And 5 is your final answer.......!!!

Hope this helps......!!!!

Do you mind doing C and D for further explanation. I understand but I still need more clarification. I dont understand when its the opposite f(g(1) or g(g(-2))

g (g(-2) )

Go to x = -2 on the graph........look at function g  .....what is it's y value when x = -2??? →  - 1 ....so....

g(-2) = -1 

So ...... g(g(-2)) =  g(-1)      go to x = -1.....look at function g.....

what is its y value when x = -1???? → 1       and that's your answer

f(g(1)) 

Go to x = 1 on the graph.....look at function g.....what is its y value there??   →  5

  So  .....g(1) =  5

So......f(g(1)) = f(5)   now go to x = 5 on the graph....look at function f......what is its y value there???  →   - 6      and that's your answer