Please help! I am super confused

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

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Find two consexutive odd integers such that the sum of their square is 650