How many times does 20 go into 1900

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

What is the reflection image of (5,-3) across the line y = -x?

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b