Answer:
Harold owes the phone company $100 and he pays them $100.
A diver is 100 feet below the surface of the water and then comes up to the surface.
Step-by-step explanation:
Harold owes the phone company $100 and he pays them $100.
If Harold owes $100, we can represent it as -$100
In the same way, if he pays $100, we can represent it as $100
So, this situation can be represented as -100 + 100
Payton adds 100 milliliters f water to a test tube containing 100 milliliters.
When we add 100 milliliters, we represent it as +100, so this situation can be represented as 100 + 100
Last night Tyler reads 100 fewer pages than the night before. He reads 100 pages tonight.
This situation depends on the number of pages that Tyler reads the night before last night. So, if that number is equal to x, we can represent the situation as:
x - 100 + 100
A diver is 100 feet below the surface of the water and then comes up to the surface.
100 feet below the surface can be represented as -100
Then, to comes up to the surface, the diver needs to come up 100 feet, so it can be represented as +100
Then, this situation is represented as -100 + 100
Therefore, the answers are:
Harold owes the phone company $100 and he pays them $100.
A diver is 100 feet below the surface of the water and then comes up to the surface.