23 < 1-4x-8 what is the answer to this?

How do i do this activity, is appreciated

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

Three times the sum of a number and seven is negative thirty-six. what is the number?