What is the 11th term of the following geometric sequence? Enter a whole number

7/9,-7/3,7,-21,63

1 answer

a(n+1) = a(n) * -3

a = 7/9

r = -3

a(n) = a r^(n-1)
so
a(11) = (7/9) (-3)^10

= 7 (3)^8

= 45927