Suraji took a slice of pizza form the freezer and put it in the oven.
The pizzas temperature (in degrees Celsius) as a function of time (in minutes) is graphed (look at photo)
How fast did the oven heat?
1) 8 degrees C per min
2) 10 degrees C per min
3) 0.9 degrees C per min
4) 0.8 degrees C per min
