If the distribution is uniform between 6 and 12, the probability of being less than 99 is 1 (certainty).
_____
Perhaps you intend to find the probability that the loss is less than 9 pounds. That value is
... (9 - 6)/(12 - 6) = 3/6 = 1/2
The answer is A I believe.
At hour 1, the equation must equal 130,
therefore s(1) = 9(1-1) + 130
s(1) = 9(0) + 130
s(1) = 130
then so on when
s(2) = 9(2-1) + 130
s(2) = 139
step 1 has incorrect justification
