lsinegal30 lsinegal30 24-07-2018 Mathematics contestada What is the formula for the following arithmetic sequence? 12, 6, 0, -6, ... an = 12 + (-6)(n - 1) an = 12 + 6(n - 1) an = -6 + 12(n - 1) an = 6 + 12(n - 1)