Group A rented and filled 3 vans and 6 buses with 204 students. Group B rented and filled 1 van and 3 buses with 97 students. Every van had the same number of students in it as did the buses. Select which TWO equations can be used to represent this situation.

A. v + b = 107
B. 3v + 6b = 204
C. 3v + 3b = 97
D. v + 3b = 97
E. v + 6b = 204
F. 2v + 9b = 107

answer: 180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

126 maybe. sorry