To find the percent of students who run track, we can set up a proportion based on the number of students who run track (7 out of 20).
First, calculate the percentage of students who run track:
\[ \text{Percentage} = \left( \frac{\text{Number of students who run track}}{\text{Total number of students}} \right) \times 100 \]
Plugging in the values:
\[ \text{Percentage} = \left( \frac{7}{20} \right) \times 100 = 0.35 \times 100 = 35% \]
Now we look for a grid model that represents this percentage.
- A grid model with 100 squares. 7 squares are shaded. represents 7% (7 out of 100).
- A grid model with 100 squares. 14 squares are shaded. represents 14% (14 out of 100).
- A grid model with 100 squares. 35 squares are shaded. represents 35% (35 out of 100).
- A grid model with 100 squares. 93 squares are shaded. represents 93% (93 out of 100).
Thus, the model that shows the percent of students who run track is:
A grid model with 100 squares. 35 squares are shaded.