Answer:Let's use an example to further illustrate this:
If we let x = 5, then f(x) = 3(5) + 4 = 15 + 4 = 19.
And h(x) = 3f(x) = 3(19) = 57.
Step-by-step explanation:Therefore, when x = 5, f(x) = 19 and h(x) = 57.
Remember, these functions represent relationships between variables, and by understanding their definitions, you can calculate their values for different inputs.