The distance Train A travels is represented by d = 90t, where d Is the distance in kllometers and t is the time in hours. The distance Train
B travels at various times is shown in the table. What is the rate of each
train? Which train is going faster?
Time (hours) Distance (km)
2.
190
4
380
5
475
The rate of Train Ais
km per hour.
The rate of Train B is
km per hour.
Train (select) v is going faster.

Anew obstacle course is home to several new types of challenging obstacles. one such obstacle is traversing a 15-stair staircase. to make it more challenging, the stairs are not uniformly spaced. rather, the vertical space between consecutive stairs for the first 10 stairs is 113 feet and the vertical space for the last 5 stairs is 134 feet. what is the total vertical distance traveled ascending and descending the entire 15-stair staircase?