Devora tested two engines. As each engine's rotation got faster, its temperature increased at a constant rate.

The first engine's temperature (in degrees Celsius) as a function of its rotation speed (in cycles per second) is given by the following table of values:

The Table is for the first engine below
For the second engine, the graph is below

The temperature of which engine increased more for each increase of 1 cycles per second?

Choose 1

(Choice A)

A

The first engine

(Choice B)

B

The second engine

(Choice C)

C

The temperatures of both engines increased the same

Which engine was hotter when it rotated at 20 cycles per second?

Choose 1

(Choice A)

A

The first engine

(Choice B)

B

The second engine

(Choice C)

C

Both engines were equally hot