What is the simplified expression for -2a^2b+a^2-5ab+3ab^2-b^2+2(a^2b+2ab )? a). a^2-9ab+3ab^2 b). a^2+9ab-b^2+3ab^2 c). 10ab+a^2-b^2 d). 3ab^2+a^2-b^2-ab

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 w = 6 units, x = 3 units, and y = 5 units, what is the surface area of the figure? 168 units2 240 units2 144 units2 96 units2

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?