The temperature T, in degrees Fahrenheit, of a cup of coffee t minutes after it is poured is given by
?
.
?
When does the temperature of the coffee reach 150 degrees? Round your answer to two decimal places if necessary.
?
A. After 15.6 minutes
B. After 65.49 minutes
C. After 63.54 minutes
D. After 20.2 minutes
Answer: A
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