mathh12 mathh12 16-10-2019 Mathematics contestada which expression is equivalent to the expression shown: 3^7 x 3^-4 a) 3^7 * 1/3^4 b) 3^7 * (-3^4) c) 3^-28 d) 3^7 * 1/3 (3 is raised to the -4) HELP ASAP
