2x - 7 + 7 combine like terms

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.

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3