Question 635638: Solve the following equation:
220 X 4^(-0.02t) = 1540
Answer by unlockmath(1688)   (Show Source):
You can put this solution on YOUR website! Hello,
This 220 X 4^(-0.02t) = 1540
We first divide by 220
4^(-0.02t) = 7
Rewritten as log we get:
Log base 4 7=-0.02t
Divide by -.02
(Log base 4 350)/-0.02 = t
Using scientific calculator we get:
t=-70.184 (rounded off)
Make sense?
RJ
www.math-unlock.com
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