(2-7i)(9+5i)
18+10i-81i-35i^2
The answer is 35i^2 - 71i +18
Divide 720,000 by 3.
Your answer is 240,000.
Prob ( guessing right) = 0.25 . Get 1 point.
Prob( guessing wrong) = 0.75. Lose 0.5 points.
Expected value = 1(0.25) + (-0.5)(0.75)
= -0.125 answer
6 More minutes because 18/3 is 6 so 1/4 of the walk is 6 mins, 2/4 is 12 mins, 3/4 is 18 mins, and 4/4 is 24 mins
