Question

How can I calculate how to do a problem similar to this? step by step


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
.

The dependent variable is the

Answer 1

amount remaining on the card.

To calculate the amount remaining on the card after a certain number of months, you can use the formula:

Remaining amount = Starting value - (Number of months after first year * Decrease per month)

Let's say we want to calculate the amount remaining on the card after 15 months. Using the given information that the starting value is $25 and the decrease per month is $2.50, we can substitute these values into the formula:

Remaining amount = $25 - (15 * $2.50)
Remaining amount = $25 - $37.50
Remaining amount = -$12.50

In this case, the remaining amount is negative, indicating that the card value has reached $0 and is now in a negative balance.