In general, you're calculating the magnitude of average velocity. In fact, speed is a vector, and as such it also has a direction and orientation.
So, if you compute the average speed, you're assuming that you went directly from point A to point B, which is basically never the case.
If, instead, you actually moved on a straight line from point A to point B, then the two quantities are the same.
miles= 30 × hours
use this equation to fill out the graph and find out what y (miles traveled) equals.
for example, multiply 5 (the hours passed) by 30. Your answer would be 150, which is the miles the biker would travel in 5 hours.
C. Medical expenses
When you find yourself in an accident your MEDICAL expenses are paid by the car insurance.
1 and 1/2 is the right one