C is 7 8 11 12 15 16 17 18. D is 11 12

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?

What is the value of x? enter your answer in the box.