I need help with this question

6x - 8 = 16 solve the following equation. then place the correct number in the box provided.

Which expression is equivalent to the expression shown?

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