8. (08.01) Given the arithmetic sequence a, = 2 - 3(n − 1), what is the domain for n? (1 point) O All Integers where n si O All integers where n 2 1 O All integers where n > 0 O All integers​

Generally we use n as a counter and begin it with 1:  the first term is obtained when n = 1.  Thus, n must be a positive integer, 1 or greater:  {1, 2, 3, ... }.

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.