Answer:
12%
Step-by-step explanation:
FV = PV*(1+i)^n
FV = 1000, PV = 130, i = annual interest rate, n = 18
∴ 1000 = 130*(1+i)^18
==> (1+i)^18 = 1000/130
==> 1+i = (1000/13)^(1/18)
i = 1.12001895 - 1
i = 0.12
i = 12%
Thus, the annual interest rate is 12%