Show a grid that has the best x-axis and y-axis scales to present the following data: Number of hours (x); 1
Total cost (y): 80
(X) - 1,2,5,7,9
(Y) - 80,110,200,260,320

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.

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.