Estimate a 25% tip on a bill of $31.54 by first rounding the bill amount to the nearest ten dollars.
estimated tip: $
x
5
?

answer:

7.64

step-by-step explanation:

round 31.54 to 30.54

30.54x.25=7.635

round 7.635 to 7.64

36 is the final answer! : )

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.