,f(x)=6sin(x-11))+19 where f(x) represents the temperature in degrees Celsius (°C) and and x is hours since midnight. What is the temperature of your house at 9:00 a.m.?

Plug in 9 into f(x):

f(9) = 6*sin((9-11))+19

f(9) = 6*sin(-2)+19 = 13.54 degrees Celsius

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