suppose you pay $2.00 to roll a fair die with the understanding that you will get back $4.00 for rolling a 1 or a 6, nothing oth
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3(r-6) +2 = 4(r+2) -21
3r - 6r +2 = 4r +8 -21
-3r +2 = 4r -13
2 = 7r -13
15 = 7r
r =
r = 7.5
3r - 6r +2 = 4r +8 -21
-3r +2 = 4r -13
2 = 7r -13
15 = 7r
r =
r = 7.5