# Science:Math Exam Resources/Courses/MATH100/December 2019/Question 09(a)

MATH100 December 2019

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### Question 09(a)

You put a bottle of room temperature water into your refrigerator. The temperature of your apartment is ${\displaystyle 23^{\circ }}$C, while the temperature of your refrigerator is ${\displaystyle 3^{\circ }}$C. After ${\displaystyle 10}$ minutes the water has cooled to ${\displaystyle 13^{\circ }}$C.

Give a formula for the temperature of the water ${\displaystyle t}$ minutes after it has been placed in the refrigerator.

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