To find the mean in a set of data you need to add all the numbers and divide by the number of digits.
–6 + 3 + –2 + 6 + 7 + –3 + –5+ 8 = 8
8 divided by 8 because there are 8 numbers which equals 1
So your final answer is <u>1 </u>
Distance = rate * time
580 = (80+65) * t
T = 4 hours