Evaluating Exponents 
Answer choices:
22
15
10
358
None of the above
This is my solution:


You are correct, the answer is 10.
\begin{align*} 2^2 + 9^ \frac{1}{2} + 2^1 + 225^0 &= 4 + 9^ \frac{1}{2} + 2^1 + 225^0 \\
&= 4 + {\sqrt{9}} + 2^1 + 225^0 \\
&= 4 + 3 + 2^1 + 225^0 \\
&= 4 + 3 + 2 + 225^0 \\
&= 4 + 3 + 2 + 1 \\
&= 10
\end{align*}
Did some extended working out for you.
