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A solid object is dropped into a pond with a temperature of 20 degrees Celsius. The function f(t) = Ce(kt) + 20 represents the

A solid object is dropped into a pond with a temperature of 20 degrees Celsius. The function f(t) = Ce(kt) + 20 represents the situation, where t is time in minutes, C is a constant, and k = 0.0399. After 4 minutes the object has a temperature of 35 degrees Celsius. What was the initial temperature of the object? Round your answer to the nearest tenth, and do not include units.

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