5/8 < 3/8x -1/4 i really can't seem to figure out the problem

Through: (-3,-3) parallel to y= 7/3x+3

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

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row