SOLUTION: solve. 5000(1.03)^(4t)=2000

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Question 736549: solve.
5000(1.03)^(4t)=2000
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
solve.
5000%281.03%29%5E%284t%29=2000
divide both sides by 5000
1.03%5E%284t%29 = .4
4t*log(1.03) = log(.4)
4t = log%28.4%29%2Flog%281.03%29
4t ~ -31
t = -31/4
t = -7.75
:
:
Check this on calc: enter: 5000*(1.03^(4*-7.75)) results about 2000