The graph shows the distances traveled by two cars over several hours. Which car is moving at a faster rate?

Car b

Step-by-step explanation:

It has gone a farther distance in a shorter amount of time.

car B

Step-by-step explanation: The graph shows two sides time and distance you can see car B is further on the graph by time and distance car A traveled a shorter distance.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

a - base

b - exponent

so,