The cost of four tickets is $32. write and solve an
equation to find the cost of one ticket.

The question wants us to find the cost of 1 ticket, and the cost of FOUR tickets is $32 meaning our question will be:

What is the cost of 1 ticket, if FOUR tickets cost $32?

And our SHOULD be either:

$4 OR $8.

( COULD NOT GIVE BEST ANSWER DUE TO LACK OF INFORMATION )

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.