Water (of volume 425 ml) in a glass measuring cup was allowed to cool after being heated to 207◦F. The ambient air temperature was 70◦F. The measured water temperature at various times is given in the...

Water (of volume 425 ml) in a glass measuring cup was allowed to cool after being heated to 207◦F. The ambient air temperature was 70◦F. The measured water temperature at various times is given in the following table.

Obtain a functional description of the relative water temperature (T = T − 70) versus time.