Calculate the distance between (0,3) and (3,10) to 1 decimal place

Answer this 30 points and brainliest!

Write the fraction or mixed number and the decimal shown by the model

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?