Complete the following table based on the relationship: My change = I pay with - It costs

Step 1: Understand the relationship.
The relationship between the cost, the amount paid, and the change received is given by:

$$\text{My change} = \text{I pay with} - \text{It costs}$$

This formula can be rearranged to find any missing value:

$$\text{It costs} = \text{I pay with} - \text{My change}$$ $$\text{I pay with} = \text{It costs} + \text{My change}$$

Step 2: Complete Table a.
We calculate the missing "My change" values by subtracting "It costs" from "I pay with".

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