The formula can be written in the form ...
... T = (original temperature) + x·(change in temperature each minute)
The problem statement gives you the original temperature (21 °C) and tells you the temperature after 12 minutes. You have to use that information to figure out the change in temperature each minute.
The change in temperature in 12 minutes is (75 °C) - (21 °C) = 54 °C. That is the change in 12 minutes, so the change in 1 minute will be 1/12 of that:
... 54/12 = 4.5
Using this value in the equation for T, we have
... T = 21 + 4.5x
You can make 13.5 three quarter servings
The answer is 9x -27 because I distribute
they need to be 8 each sides
well if 4 squares are = to 3 and its a cube then all the sides must be even
so if 3x2=6 and you need the square to have 6 as its sides then you need to get 4x2 which = 8