if h(x) = 3x and k(x) = 2x - 4, what is h(k(x))??

Answer:
6
Step-by-step explanation:
k(x) = 2x - 4 = 0
2x = 4
x = 2
Now replacing it in h(x) as 2
h(x) = 3x
3 × 2 = 6