Question 126690
A cup of tea cools exponentially according to the function T(x)=60(0.79)^(x/3)+30,where T is the temperature in degrees celcius and x is time in minutes. What was the initial temperature of the tea? I think it is 90 degrees celcius. Can someone kindly confirm ???
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The "initial time" means x=0
If x=0 in your formula, T(0) = 60
That is the initial temperature.
Cheers,
Stan H.