Maria scored 72, 97, and 82 on her first three math tests. She wants to have a mean score of 82 for the quarter. How many points does she need on her last test to earn an 82 for the quarter?

To average 82 across four tests, Maria needs a total of 4 × 82 = 328 points. Her first three scores total 72 + 97 + 82 = 251. She needs 328 − 251 = 77 points on her last test, so the answer is 77 (choice B).

AI-written and checked against the verified answer.