Looks like you'll need a numerical method to find the values:
C(n) is a positive integer, but there is no positive integer that, when cubed, equals 16.
Like so:
Deleted.
As follows:
Probability that Emma is not chosen: pE = 1-0.1 = 0.9
Probability that Michael is not chosen; pM = 1-0.1 = 0.9
Probability that neither is chosen: p = pE*pM = 0.81
If I've interpreted your question correctly, then , assuming that it's row1 replaced by row1 - 12*row2, we have
A → [4 - 12*(-6), 3 - 12*(-3), 0 - 12*12]
[ -6, -3, 12 ]
I'll leave you to do the number crunching!
Multiply the 1.1 degF by 11 and subtract the result from 53.7 degF
+33661 
