Answer: -7
Step-by-step explanation: x=3 and y=2
Divide the amount of teenagers that smoked by the total population:

Multiply this decimal by 100 to convert into a percentage:

To round to the nearest decimal place, look at the hundredths value:
8.5
3
3 > 5
8.53 -> 8.5
8.5% of teenagers reported that they smoked at least one cigarette.
Mean 6.6
Median 6
Mode 3
Range 10
not positive on the 6.6 but the rest should be good