What is the number of permutations for a 4 digit number using the digits 0 – 9, if numbers cannot be repeated

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.

The step function g(x) is defined as shown. what is the range of g(x)? ***answer choices in picture.

Which strategy is used by public health to reduce the incidence of food poisoning?