Answer:
Step-by-step explanation:
(f + g)(x) simply means that you are adding together the 2 functions that are written in terms of x.

The only like terms we have there are the x-cubed's, so

Answer:
no
Step-by-step explanation:
1.8×100 would be 180 because you're moving the decimal place two to the right.
obviously 4 is bigger coz 12/7 will yeild you 1.71
Answer: 16%
Step-by-step explanation:
168.2 - 145 = 23.2
23.2/145 = 0.16
0.16 as a percent is 16%