4,12,36,108,324 identify the pattern

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?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?