Solve for the expression (k+m)

Detailed steps would be great, thx

To which set of numbers does the number –5 belong? select all that apply. integers natural numbers rational numbers real numbers whole numbers

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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