When solving this system of equations by elimination, which could be the resulting equation when a variable has been eliminated?

2-digit numbers less than 91 which are 1 less than a multiple of 10

Which shows the graph of the solution set of 3y – 2x > –18?

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.