The temperature of a certain cup of coffee 10 minutes after it was poured was 120 degrees fahrenheit. if the temperature f of the coffee t minutes after it was poured can be determined by the formula f = 120(2–at) + 60, where f is in degrees fahrenheit and a is a constant, then the temperature of the coffee 30 minutes after it was poured was how many degrees fahrenheit?
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The temperature of a certain cup of coffee 10 minutes after it was poured was 120 degrees fahrenheit...
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