A movie theater charges $6.00 for adults, $3.50 for children, and $5.00 for senior citizens. One day the theater sold 375 tickets and collected $1,320 in receipts. There were twice as many children's tickets sold as adult
tickets. Write the system of equations that can be used to solve this problem.

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.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

The cost of a taxi ride includes an initial charge of $2.00. if a 5km ride cost $6.00 and a 10km ride cost $10.00, determine the cost of a 15km ride.