What does r represent in statistics

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

In angle pqr find the measure of

Were only 64 seats. the remaining 6 students had to travel in a separate van. the equation 2b + 6 = 70 represents the given scenario. what does b represent? the number of buses the number of vans the number of students who rode on each bus the total number of students going to the football game