Answer: The value of h(6) is 28.
Step-by-step explanation: First, we need to calculate the value of f(x-3):f(x-3) = (x-3) - 3 = x - 6
Next, we need to substitute this into h(x) and simplify:h(x) = 2f(x-3) + g(x+1) = 2(x-6) + 4(x+1) = 6x - 8
Finally, we can substitute x = 6 to find h(6):h(6) = 6(6) - 8 = 28