Can someone help me with this question?

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

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

How do you determine if an ordered pair is a solution to a given equation?