I think it's 7 1/2 because you can turn 30 1/4 to 15/2, which simplifies to 7 1/2
F - 3/4 = 5/6
Add 3/4 to both sides to get
F = 5/6 + 3/4 = 19/12
2 to the power of 20/3 to the power of 8. 2^20/3^8 for short.
The answer is 3. If you set it up in a T table and label x as the number of hours and y as the number of rows. Then use rise over run (y over x) the fractions simplify to 3 over 1.
