Austin worked out the problem to the left and got an answer of

Question

Lisa thinks he made a mistake and the answer should be


Who is correct or are they both wrong? Why?

Answer 1

To determine who is correct, I would need the specific problem that Austin and Lisa worked on, along with their respective answers.

Please provide the details of the problem and the answers they obtained, and I'll be glad to help you assess who is correct or if both are wrong.