State the explicit form of the pattern: 4, 9, 14, 19, a) an = n + 5 b) an = 2n - 5 c) an = 2n - 1 eliminate d) an = 5n - 1

Alarger number is double the sum of a smaller number. the larger number is 2 less than 3 times the smaller number. if y represents the larger number and x represents the smaller number, which equations model the situation