Answer: $12.05
Step-by-step explanation: Taking as Teresa is paying for herself, and there’s no other evidence that $7.95 is the only price that she has to pay, we can calculate the total that she gets back by subtracting the $20 she uses to pay by the total, $7.95 to get an answer of $12.05. I hope this is right, and if it is, I hope it helped! :)