Thanks for the suggestion Billy Bob substituting for e.5k worked, guess I was just over thinking things.
Also, thanks to your suggestion D H of looking at the second half minute, where temperature increased by 35, I found the simpler way of doing the calculation TR, I'll go ahead and post...
Homework Statement
A thermometer reading 70o F is placed in an oven preheated to a constant temperature. Through a glass window in the over door, an observer records that the thermometer reads 110o F after 1/2 minute and 145o F after 1 minute. How hot is the oven.Homework Equations...