Is this correct? You are trying to decide how to most efficiently use your oven. You do not want the oven running at a high temperature whn 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 oven 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. Temp=70+7*45=385; I took 70 and added 7 then I took and multiplied it by 45 to get 385 degrees. Is this right?
That's correct. I think it might be better if you made it clearer in your explanation that you did 70 + (7*45); as it stands now, somebody reading the explanation might think you meant you did (70+7) * 45.
Yes, your answer is correct. To arrive at the temperature of the oven after 7 minutes, you used the expression Temp = 70 + 7 * 45. Let's break it down step by step:
1. The initial oven temperature is given as 70 degrees Fahrenheit.
2. The oven temperature increases by 45 degrees Fahrenheit per minute.
3. Multiplying the increase rate (45) by the number of minutes (7) gives us the change in temperature over the 7 minutes, which is 7 * 45 = 315 degrees Fahrenheit.
4. Adding the change in temperature (315) to the initial temperature (70) gives us the final temperature: 70 + 315 = 385 degrees Fahrenheit.
Therefore, the temperature of the oven after 7 minutes will indeed be 385 degrees Fahrenheit. Well done!