Find the indicated term of the given geometric sequence a1=-20, r=11, n=12

The first term of this sequence is - 20, and the common ratio is 11. Thus, the formula for the nth term is

a (n) = a (1) * (11) ^ (n-1), or (-20) * (11) ^ (n-1).

Thus, the 12th term is

a (12) = (-20) * (11) ^ (12-1) = - 20 (11) ^11 = - 20 (2.85 times 10 to the 11th power.

or ... - 5.71 times 10 to the 12th power.