The temperature in Indianapolis, Indiana, at 5 am was 15 degrees Fahrenheit. If the temperature drops 2 degrees each hour, what is the temperature in degrees Fahrenheit at 2 pm?
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Answer:
Temperature at 5 A.M. = 15 degree
Rate of decrease in temperature = 2 degree per hour
No. of hours = 9 hours
Temperature at 2 P.M. = No. of hours × Rate of decrease in temperature
Since the temperature is decreasing we write -2 instead of 2
therefore, 9 × (- 2)
= - 18
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