the density of oxygen is 0.0001429 grams per cubic centimeter. how is this number written in scientific notation?

In the geometric progression –3, 12, −48… what term is 3,072?

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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?