Question 143435: 2. You are trying to decide how to most efficiently use your oven. You do not want the oven running at a high temperature when it is not baking, but you also do not want to waste a lot of time waiting for the oven to reach the desired baking temperature.
The instruction manual on the industrial oven suggests your oven temperature will increase by 45 degrees Fahrenheit per minute. When the over is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7 minutes? Write an expression and explain how you arrived at your answer.
Now HOW do I figure and write this expression? Help please.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The instruction manual on the industrial oven suggests your oven temperature will increase by 45 degrees Fahrenheit per minute. When the over is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7 minutes? Write an expression and explain how you arrived at your answer.
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You have two points: (0,70) and (1,70+45)
(0,70) tells you the temperature is 70 when you 1st turn on the oven.
(1,115) tells you the temperature increases 45 degrees in 1 minute.
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Slope = (115-70)/(1-0) = 45
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EQUATION: temp = 45(minutes) + 70
t(7) = 45*7 + 70
t(7) = 385 degrees
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Cheers,
Stan H.
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