Mathematics, 03.04.2020 02:38 rubencharomarti
At 7:00 A. M., Alicia pours a cup of tea whose temperature is 200°F. The tea starts to cool to room temperature (72°F). At 7:02 A. M. the temperature of the tea is 197°F. At 7:15 A. M. the temperature of the tea is 180°F. Alicia will drink the tea when its temperature is 172°F.
Which of the following shows an exponential cooling equation that models the temperature of the tea?
A. y = 72(0.989)x + 128
B. y = 128(0.989)x + 72
C. y = 200(0.989)x + 72
D. y = 128(0.989)x + 200
When can Ella drink the tea?
Ella can drink the tea after
A. 7:18am
B. 7:22am
C. 7:35am
Answers: 3
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