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March 29, 2015

Posted by **Kristi** on Monday, October 15, 2012 at 12:20am.

N(T) = 10T2 − 20T + 700, 1 ¡Ü T ¡Ü 20where T is the temperature of the food in degrees Celsius. When the food is removed from refrigeration, the temperature of the food is given by

T(t) = 5t + 2, 0 ¡Ü t ¡Ü 6 where t is the time in hours.

(a) Find the composition N(T(t)).

N(T(t)) = 1

, 0 ¡Ü t ¡Ü 6

- Math -
**Steve**, Monday, October 15, 2012 at 10:13amN(t) = 10t^2 - 20t + 700

N(T(t)) = 10T^2 - 20T + 700

= 10(5t+2)^2 - 20(5t+2) + 700

= 250t^2 + 100t + 700

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