Step 1 :Given the function g(x) = 4^(x+3)
Step 2 :We are asked to find the value of g(3)
Step 3 :Substitute x = 3 into the function
Step 4 :So, g(3) = 4^(3+3) = 4^6
Step 5 :Calculate the value of 4^6
Step 6 :So, g(3) = 4096
Step 7 :Final Answer: \(\boxed{4096}\)