Question 850655
the heat loss of a glass window varies jointly as the window's area and the difference between the outside and the inside temperatures.
 a window 6 feet wide by 3 feet long loses 900 Btu per hour when the temperature outside is 15 degrees colder than the temperature inside.
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Find k of the equation
6*3*15*k = 900
270k = 900
k = 900/270
k = 3.33
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"find the heat loss through a glass window that is 3 feet wide by 9 feet long when the temperature outside is 19 degrees colder than the temperature"
HL = 3*9*19*3.33
HL = 1710 btu heat loss 
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