On an English test, John scored 50 points on the essay portion. The test also had short-answer questions worth 2.5 points each. Choose an expression for John’s total points if he answered r short-answer questions correctly.

John already earned 50 points on the essay. Each correctly answered short-answer question adds 2.5 points, so r correct answers add 2.5r points. His total is 50 + 2.5r, which is choice A.

AI-written and checked against the verified answer.