One day less than three weeks is how many days?

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation

#7. m is the midpoint of pq, the diameter of the circle o is 13in. and rm = 4in. find pm find pq