If Jake invests $15,000 and earns 4% compound APR, how long will it take for his investment to double? Hint: use the rule of 72 to compute your
answer.
100 years

l36 years

18 years

Situation: find the age of the skull to the nearest year, enter the correct answer. a hiker in africa discovers a skull that contains 32% of its original amount of c- 14. done n = noekt 00000 no = inital amount of c-14 (at time t = 0) n = amount of c-14 at time t k = 0.0001 t = time, in years