The light bulb is important because it helps you see in the dark.
The light bulb is a round object that produces light from energy.
People can't live without the light bulb because it helps you out a lot such as see in the dark like when you do homework at night.
It could help businesses profit because many will want to buy it cause they can be cheap but many will sell and it could help you a lot!
Answer:
Subtraction
Explanation:
That is subtracting the values of two cells.
You know because of the "-" sign
