We want to know how many yards of ribbon did Jenny buy, we will find that she bought 13 yards of ribbon.
So we know that she has $15 in her card, and after the purchase, she has $13.18.
Then the cost of the ribbon was $15 - $13.18 = $1.82
Knowing that the price per yard of ribbon is $0.14, the number of yards of ribbon bought is just:
$1.82/$0.14 = x
This is the equation we need to solve, taking that quotient we get:
$1.82/$0.14 = x = 13
This means that she bought 13 yards of ribbon.
If you want to learn more about quotients, you can read:
https://brainly.com/question/7068223