<PRE><B>Question 143435</B>
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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