Y is directly proportional to x ^2 . If y = 45 when x = 3 find x when y = 180

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Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

How do i do this activity, is appreciated