Explanation
The probability of an event is the number of favorable outcomes divided by the total number of outcomes possible
[tex]P=\frac{favorable\text{ outcomes}}{\text{total outcomes}}[/tex]then
Step 1
Let
rectangle filled with spinach= favorable outcomes=3
total outcomes= total casseroles= 3+8+3+4=18
Now, replace.
[tex]\begin{gathered} P=\frac{favorable\text{ outcomes}}{\text{total outcomes}} \\ P=\frac{3}{18} \\ P=0.1666 \\ \text{rounded} \\ P=0.17 \end{gathered}[/tex]therefore, the answer is 0.17
I hope this helps you