8. Functions f and g are inverses of each other. Copy and complete each table of values for g. a.
-2
--1
0
1
2
b.
х
1
2
3
45
f(x)
-3
3
9
15
21
f(x)
9
7
5
3
1
х
g(x)
g(x)

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

How do you use the elimination method for this question? explain, because i really want to understand!

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.