Question

Nathan is preheating his oven before using it to bake. The initial temperature of the oven is 65° and the temperature will increase at a rate of 20° per minute after being turned on. What is the temperature of the oven 7 minutes after being turned on? What is the temperature of the oven tt minutes after being turned on?

Answer 1

205°

T(t) = 65°+20°t

Explanation:

Let the temperature be T and time be t

The equation to determine the temperature T after t minutes is:

• T(t) = 65° + 20°t

For t = 7 we get:

• T(7) = 65° + 20°*7 = 65° + 140° = 205°