Question 1139496
The temperature T of an object in degrees Fahrenheit after t minutes is represented by the equation 

{{{T(t) = 63e^(-0.0174t) + 79}}} where {{{t}}} is in minutes

 the temperature of the object after {{{1.5}}} hours will be:

{{{t=1.5h=90min}}} 


{{{T(90) = 63e^(-0.0174*90) + 79}}}

{{{T(90) = 63e^(-1.566) + 79}}}

{{{T(90) = 63(0.208879) + 79}}}

{{{T(90) = 92.159377}}}

To the nearest degree, the temperature of the object after one and a half hours is {{{92}}} degrees  Fahrenheit.