What is the 30th term in a sequence given by the explicit function: A (n) = - 1 + (n-1) 2

It'll be A (30) = - 1 + (30-1) 2

The common difference is 2

The first term is - 1

First subtract 30 from 1 you get 29

29 times 2 = 58

58 - 1 = 57

The 30th term in this secuence is 57