When the population is normally distributed and the population standard deviation σ is unknown, then for any sample size n, the sampling distribution of x-bar is based on the z distribution. TRUE or FALSE?

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Plot the intercepts to graph the equation

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?