6 times the sum of 3 consecutive odd integers is -18

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Use circumcenter theorem to solve for the given values