Question 144322
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 relating time and temperature:
(0,70) and (1,70+45)
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Find the equation:
slope = 45
intercept = 70
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EQUATION:
t(x) = 45x + 70 where x is the number of minutes and t is temperature
t(7) = 45*7+70 = 385 degrees
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Cheers,
Stan H.