Answer: His estimate is not reasonable because the time it took to cover the last distance is 24.1 minutes and it is below his estimate
Step-by-step explanation:
On his way to the farm, he covered a distance of 112.25 miles in 60 minutes.
Speed = distance/time.
So his speed is 112.25/60 = 1.87 miles per hour.
He visits a friend on the way, and thereafter drives 45 miles at the same speed. So he covered 45 miles at a speed of 1.87 miles per minute.
Time taken = distance / speed
Time it took him to cover 45 miles = 45/1.87 = 24.1 minutes
B) 7, -4, -1/3
C) 7, 4, 1/3
D) 7, 4, -1/3