Answer:
1.
If the composition of two functions is the identity function, then the two functions are inverses. In other words, if f(g(x)) = x and g(f(x)) = x, then f and g are inverses.
For
, we have:


As you can see, f(g(x)) does not equal x, and g(f(x)) does not equal x. Therefore, g(x) and f(x) are not inverses.
Sure, here are the inverses of the functions you provided:
2. g(n) = (8/3)n + 7/3
we can swap the roles of x and y and solve for y to find the inverse of g(n). In other words, we can write the equation as y = (8/3)n + 7/3 and solve for n.
y = (8/3)n + 7/3
n =3/8*( y-7/3)
Therefore, the inverse of g(n) is:

3. g(x) = 1 - 2x^3
We can use the method of substitution to find the inverse of g(x). We can substitute y for g(x) and solve for x.
![y = 1 - 2x^3\\2x^3 = 1 - y\\x = \sqrt[3]{(1 - y)/(2)}](https://img.qammunity.org/2024/formulas/mathematics/college/dbowdqp1lfzsqag0lsx1a60x791clsa1jt.png)
Therefore, the inverse of g(x) is:
![g^(-1)(x) =\boxed{ \sqrt[3]{(1 - x)/(2)}}](https://img.qammunity.org/2024/formulas/mathematics/college/f57f6t73n2o2athcy0cbfnwp0s8bucg2tc.png)