<h2>
Answer:</h2>
<em><u>(a). 73° C. </u></em>
<em><u>(b). 176° C.</u></em>
<em><u>(c). 93.02°C.</u></em>
<h2>
Explanation:</h2>
In the question,
We have been given an equation,
(a).
We need to find the temperature of the kitchen,
So,
Time, t → ∞
On putting the value of t as infinite in the equation we get,
<em><u>Therefore, the temperature of the Kitchen is 73° C. </u></em>
(b).
The initial temperature of the bread when it is removed from the oven is at, t = 0 s
So,
On putting the value of t = 0, we get,
<em><u>Therefore, the initial temperature of the bread is 176° C.</u></em>
(c).
On putting the value of t = 90 minutes, we get,
<em><u>Therefore, the temperature of the bread after 90 minutes is 93.02°C.</u></em>
<em><u></u></em>