Which is the 19th term in the sequence: an = -2(n - 3)?

Answer 1

a n = - 2 ( n - 3 )

n = 19

a 19 = - 2 ( 19 - 3 )

a 19 = - 2 * 16

a 19 = - 32

Answer 2

what are the first three terms of the sequence a1=2 and an=3(an-1)2