<PRE><B>Question 251609</B>
The space in a landfill decreases with time as given by the function f(t)=270-70 log5(4t+1). Where t is measured in years. How much space is left when t =1?
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f(t) = 270 - 70*log5(4t+1)
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f(1) = 270 - 70*log5(5)
f(1) = 270 - 70*1
f(1) = 200 cu units

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Cheers,
Stan H.</PRE>