Will give brainiest!!!

Answer:
$13.50
Step-by-step explanation:
Add all the snacks' prices together
3.25 + 1.80 + 1.45 = $6.50
Subtract the total price of the snacks from the $20 bill she paid with
20 - 6.50 = $13.50
So, $13.50 was the amount of change she received.