Answer:
3.6 miles
Step-by-step explanation:
The three points form a right triangle. The hypotenuse is the distance from Bruce and Avery's house, and the first leg is the distance from Avery's house to the school. Using the Pythagorean Theorem's converse, sqrt(7^2-6^2), and rounding it to the nearest tenth, we get 3.6 miles.