Sue, sam, and jen paid for a car at the cost of $4400. sue paid two times more than jen .sam paid three times more plus $200 then jen . what did each pay? i did it like this

Your working is correct as far as it goes. It shows that

... x = 4200/6 = 700

Then you need to finish the problem. x represents what Jen paid, so

... Jen paid $700

2x represents what Sue paid, so

... Sue paid $1400

And 3x+200 represents what Sam paid, so

... Sam paid $2300

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.

answer is x<