When you do (f+g)(x), all you have to do is take both functions and add them to each other. It should look like this when you set it up:

Then just add like terms and you should get:

Hope this helped.
Answer:
Here is the graph I made, starting from (-3,1) to (-2,-1) it goes down 2 units and over 1 unit.
Answer:
3
Step-by-step explanation:
If figure A is half the size of figure B, then 1.5 x 2 = 3.
8*10 squared as a decimal would be 2.8