college algebra

msummers:

e^.05t=1600

e^.05t=1600
ln( e^(0.05*t) ) = ln( 1600 )
0.05*t = ln( 1600 )
t = ln( 1600 )/0.05
[input]ln( 1600 )/0.05[/input]

test:
[input]e^(.05*147.555178164558)[/input]