8. Evaluate $10.2 x+9.4 y$ when $x=2$ and $y=3$.
\[
\begin{array}{l}
10.2(\square+9.4( \\
=\square+28.2 \\
=\square \square
\end{array}
\]

Answer

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Answer

The final answer is $\boxed{48.6}$.

Steps

Step 1 ：Given the expression $10.2x + 9.4y$, we are asked to evaluate it when $x=2$ and $y=3$.

Step 2 ：Substitute $x=2$ and $y=3$ into the expression, we get $10.2*2 + 9.4*3$.

Step 3 ：Perform the multiplication first according to the order of operations, we get $20.4 + 28.2$.

Step 4 ：Finally, add the two numbers together to get the final result.

Step 5 ：The final answer is $\boxed{48.6}$.