Answer:
Step-by-step explanation:
The formula for determining distance is expressed as
Distance = speed × time
From the information given,
Speed of boat = 10 miles per hour
It means that the distance that the boat covered after t hours is 10 × t = 10t miles
Since the boat is 100 miles away from the marina and it is sailing directly towards it, then the equation for the distance of the boat from the marina after t hours is
Distance = 100 - 10t