A person invested $240 in an account growing at a rate allowing the money to double every 14 years. How long, to the nearest tenth of a year would it take for the value of the account to reach $430?
+36916 480 = 240(1 + i)^14 i = 5.076 %
430 = 240 (1.05076)^n n= 11.77 years 11.8 years
