The term $x$ is simply the average of $3^2 = 9$ and $3^4 = 81$, which is $(9 + 81)/2 = 90/2 = \boxed{45}$.
Question:
What is the integer value of $x$ in the arithmetic sequence $3^2, x, 3^4$?
Answer:
Let's think step by step.

user
45
What is the integer value of $x$ in the arithmetic sequence $3^2, x, 3^4$?
test