Find the fifth term and the nth term of the geometric sequen

Find the fifth term and the nth term of the geometric sequence whose initial term, a, and common ratio, r, are given.

a = 4; r = 3

a = -6; r = -2

Solution: - Given a = 4, r = 3 pi

l = ar^(n-1)

For the fifth term

l = 4(3pi)^(5-1) = 4 (3 pi)^4

for nth term

l = 4(3 pi)^(n-1)

Part b: - a =-6, r = -2

l = -6(-2)^4 = -96

l = -6(-2)^(n-1)