To estimate \( 3 \times \pi \), we can use the approximation \( \pi \approx 3.14 \).
Calculating:
\[ 3 \times 3.14 = 9.42 \]
Now, let’s look at the responses:
- 647
- 6 and 4 sevenths (which is approximately \( 6.57 \))
- 637
- 6 and 3 sevenths (which is approximately \( 6.43 \))
- 917
- 9 and 1 seventh (which is approximately \( 9.14 \))
- 937
Among these options, the best estimate for \( 3 \times \pi \) would be 9 and 1 seventh. This is because \( 9.14 \) is closest to \( 9.42 \).