my answer is as follows.
there is a 3/5 (0.6) chance of winning $4,
so 0.6 X $4 = $2.40
there is a 1/5 (0.2) chance of winning $0,
so 0.2 X $0 = $0
there is a 1/5 (0.2) chance of losing $8,
so 0.2 X -8 = -$1.60
Now add them up, 2.40 + 0 - 1.60 = $0.80
Then you times the...