(Solved): An ice cube tray filled with tap water is placed in the freezer, and the temperature of the water ...

An ice cube tray filled with tap water is placed in the freezer, and the temperature of the water is changing at the rate of $$?10e^{?0.2t}$$ degrees Fahrenheit per hour after $$t$$ hours. The original temperature of the tap water was 75 degrees. (a) Find a formula for the temperature of water that has been in the freezer for $$t$$ hours. $$T(t)=$$ (b) When (in hours) will the ice be ready? (Water freezes at 32 degrees. Round your answer to the nearest hour.) $$t=$$ hours