Answer:
a. 3
b. 5
c. 5
d. 6
Step-by-step explanation:
(f○g)(x) means f(g(x)).
so, first we do g(x), and then we use that result as "x" for f(x).
x = 5
so, for (f○g)(5) we look first for g(5). it is 6.
now, we look for f(6). it is 3.
x = 2
g(2) = 3
f(3) = 5
x = 3, but for (g○g), so twice g(x)
g(3) = 1
g(1) = 5
x = 2, but for (g○f)
f(2) = 5
g(5) = 6
