Final answer:
Using the distance-speed-time formula, it will take Coach's boat 4 hours to reach the coast from a distance of 6 miles at a speed of 1.5 mph.
Step-by-step explanation:
To determine how long Coach's boat will take to reach the coast from a distance of 6 miles at a speed of 1.5 mph, we can use the basic distance-speed-time formula: Time = Distance ÷ Speed. In this scenario, we know the boat's distance from the coast (6 miles) and its speed (1.5 mph).
Following the formula:
If we divide 6 miles by 1.5 mph, we get:
Thus, it will take Coach's boat 4 hours to reach the coast.