Answer :
Answer:
-$2.99 per visit
$28 Original Gift Card Balance.
Step-by-step explanation:
According to the question, after the third visit the total amount of money on the card was $19.03, two visits later (fifth visit) the total was $13.05. Meaning that the difference between these two totals would equal 2 large coffees because it is what Zaire buys every visit.
19.03 - 13.05 = $5.98 for 2 large coffees
5.98 / 2 = 2.99 per large coffee
Therefore, we can see that the rate of change is -$2.99 per visit. Meaning that every time she visits Dunkin Donuts she spends $2.99 which makes her total gift card balance drop by that amount which is why the rate of change is negative.
Since the $19.03 total is after three visits we can multiply 2.99 by 3 and add the result to $19.03 to find the original balance of the gift card.
(2.99 * 3) + $19.03 = x
8.97 + 19.03 = x
28 = x