To determine who picked the winning scroll, we need to compare the values on the scrolls picked by Cecily and her friends.
- Cecily's scroll: 6.7
- Marty's scroll: -37
- Jon's scroll: \( \frac{7}{9} \) (approximately 0.78)
- Fiona's scroll: \( 3 \frac{1}{3} = 3 + \frac{1}{3} = \frac{10}{3} \) (approximately 3.33)
Now we can compare these values:
- Cecily: 6.7
- Marty: -37
- Jon: \( \frac{7}{9} \) ≈ 0.78
- Fiona: \( \frac{10}{3} \) ≈ 3.33
The highest value is 6.7, which was picked by Cecily.
Therefore, Cecily picked the winning scroll.