Answer
Option 3 is correct.
She would get back $11.18 from $20 bill after buying all these.
Step-by-step explanation
We are told that Valentina purchased 3½ yards at a rate of $2.40 per yard with a 5% tax.
She went to the store with a $20 bill.
We are then asked to calculate how much she'll get back
So, to solve this, we need to calculate all of Valentina's expenses
1 yard = $2.40
3½ yards = 3½ × 2.40 = $8.40
We are then going to consider the extra cost due to 5% tax
5% of $8.40 = 0.05 × $8.40 = $0.42
So, the total expenses = $8.40 + $0.42 = $8.82
If one goes to the store with a $20 bill and spends $8.82, the amount remaining = $20 - $8.82 = $11.18
Hope this Helps!!!