How long is the line between the two cities on the map? I see that you wrote 15/8 inches. That can't be right. If it is then the correct answer is not one of the choices. If it's really 15/8 inches then their average speed would be 48 miles per hour.
The least common multiple of each is 2. 2 x 25= 50. 2 x 30= 60 and 2 x 36=72
The standard for is Y=-5/3x +3
