When Sports Authority went out of business, there was an 70% off sale on all items. A snowboard originally cost $300. How much would you pay after the 70% off discount?

You would pay $90 after the 70% off discount.

Step-by-step explanation:

so 70% of 300= 90

So the cost would be $90 for the snowboard after the 70% off discount.

the correct answer is the second option

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.