Alicia, Jamar, and Tia collect dimes for charity. Alicia collects (3k + 4) dimes. Jamar collects twice as many dimes as Alicia. Tia collects 415 + 6k) dimes.
How many dimes do they collect altogether in terms of k?

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