The temperature, f(t) of a cup of coffee after t minutes can be determined by the equation f(t)=75(0.96)t\displaystyle {f{{\left({t}\right)}}}={75}{\left({0.96}\right)}^{{t}}.

A graph of the function f(t) is shown below.

51015201020304050607080tf(t)

Estimate the temperature after 5 minutes