Q1: A television is rated at 640 W. What is the cost of operating the TV for 5 hours, if the utility charges $0.08 per kilowatt-hour?
Hint: 640 W = 0.64 kW.
2. The room temperature is 75 ºF in a classroom. What is this temperature on the Celsius scale? Hint: C= 5/9 (F-32), where C and F denote the temperature on the Celsius scale and Fahrenheit scales, respectively.
23.89 ºC
43 ºC
77.4 ºC
17.78 ºC
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