HELP ME ASAP
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Round your answer to the nearest hundredth.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

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?

Write the percent as a fraction or mixed number in simplest form. 0.8%