Use set builder notation to represent the following set. {... -3, -2, -1, 0}

Which one?
{x | x N, x ≤ 0}
{x | x Z, x ≤ 0}
{x | x R, x ≤ 0}

Plz need answer now will mark which situations represent linear functions? check all that apply. a)the temperature rises and falls over the course of a day. temperature is a function of time. b)a baseball is hit into the outfield. the height of the ball is a function of time. c)a car goes 55 mph on the highway. distance is a function of time. d)a child grew 2 inches this year and 1 inch last year. height is a function of time. e)a movie director makes 2 movies per year. the number of movies is a function of the years.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Which expression is equivalent to -12(3x-3/4)