Answer: a)35 b)36 or 31 c)36/6=6 or 31/5=5.2
Explanation:
a) The mean is the sum of all the numbers divided by how many there are, so the inverse to that would be 5*7=35
b) I do not fully understand the question, if it is added as the 6th number, than 36, if it is substituted in for one of the 5 then 31.
c) I have already mention that the mean is the sum/how many #s, so in the case of 36: 36/6=6 or 31/5 =5 1/5=5 2/10=5.2