The function f(x)=x^2+2x+6 is graphed in the xy-coordinate plane shown .Based on the graph of the function ,which of the following statements are true select all that apply

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

Can you me find the missing length. i attached an image.

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.