To find the conversion from yards to feet, we note that 1 yard is equal to 3 feet.
Using this information, we can apply the conversion:
- For 2 yards: \(2 \times 3 = 6\) feet
- For 5 yards: \(5 \times 3 = 15\) feet
- For 7 yards: \(7 \times 3 = 21\) feet
Now, for 15 yards:
\[ 15 \times 3 = 45 \text{ feet} \]
Thus, 15 yards is equal to 45 feet. Therefore, the answer is:
45