Seudónimo Seudónimo 03-11-2016 Mathematics contestada PLEASE HELP!! 20 POINTS Which expressions are equivalent to −7b(3−c)? Select each correct answer. 21bc -4b + 7c -7b - 21bc -21bc + 7bc (-7b * 3) + (7b * c) Which expressions are equivalent to this expression? 3(n - 4) Select each correct answer. 3n + 12 2n - 12 + n -12 + n + n + n 3n - 4