For each expression use a property to write an equivalent expression. tell which property you used.
x+13
4(2x-3)
2+(a+b)

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

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

Will give brainliestbased on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m?