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Algebra
Pregunta

A covered mug of coffee originally at \( 190 \) de...

A covered mug of coffee originally at \( 190 \) degrees Fahrenheit, if left for \( t \) hours in a room whose temperature is \( 70 \) degrees, will cool to a temperature of \( 70 + 120 e ^ { - 1.8 t } \) degrees. Find the temperature of the coffee after the following amounts of time. (Round your answers to the nearest degree.) (a) \( 45 \) minutes. (b) half an hour.

Answer

a) 101

b) 119

Solución
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