Question 567879
e^.05t = 1600


ln(e^.05t) = ln(1600)


.05t*ln(e) = ln(1600)


.05t*1 = ln(1600)


.05t = ln(1600)


t = ln(1600)/(0.05)


t = 147.555178164558


Note: the last answer is approximate.