The average estimated hours a person in the United States spent playing video games per year from 2002 to 2012
were 71, 80, 82, 78, 80, 91, 107, 121, 125, 131, and 142.
Use the statistics calculator to find the variance and population standard deviation. Round answers to the nearest
whole number
The variance of this data set is
The population standard deviation for this data set is

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.

In which form is the following function written? y = - 2(x – 3)(x + 5)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers