A quantity and its quarter added becomes 15. What is the quantity?

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

Me. i can't figure out this question. give an explanation too. .

Drag the tiles to the correct boxes to complete the pairs. label each function. as even , odd, or neither.