A cash card has a starting value of $25. If the card is not used within the first year of its purchase, the value on the card begins to decrease by $2.50 per month.

The relationship between the number of months after the first year and the amount remaining on the card is:
The independent variable is:
The dependent variable is:

The independent variable is the number of months after the first year.

The dependent variable is the amount remaining on the card.