Answer:


Step-by-step explanation:
We know the definition of both functions:
, and 
A) In order to evaluate what
, let's first investigate what g(-1) is using the definition for this function:

Now let's find what f(2) is using f(x) definition: 
B) In order to evaluate what
, let's first investigate what f(3) is using the definition for this function:

Now let's find what g(7) is using the definition for this function:

Answer:
x = 7/15
Step-by-step explanation:
you can check by replacing the x with the number I gave you
Answer:
the last one
Step-by-step explanation:
it's basically finding the area for a cube and then cutting it in half, so multiply it all together and then divide by 2. sorry if I'm wrong lol
Answer:
-2 5/6
Step-by-step explanation:
Answer:
27 after 81 is 243
Step-by-step explanation:
The pattern is that you multiply 3 each time.