What kind of mathematics are you learning?
8 ( 4 - x ) = 7x + 2
32 - 8x = 7x + 2
-7x -7x
--------------------------
32 - 15x = 2
-32 -32
----------------------------
-15x = -30
/-15 /-15
x = 2.
They would be riding in the train for 8 hours and in the car for 5 hours.
They spent 560 miles on the train
They spent 200 miles in the car
Simple...
when they ask for the rate of change they ask for
slope -->>
Using

to find the rate of change for (-3,0) and (-2,-5)



m=-5
Thus, your answer.
Answer:
Step-by-step explanation: