SOLUTION: A test has 30 questions, you earn 9 points for every correct answer but lose 5 points for every wrong answer. The final test score was 18, how many questions were answered correct

Algebra ->  Human-and-algebraic-language -> SOLUTION: A test has 30 questions, you earn 9 points for every correct answer but lose 5 points for every wrong answer. The final test score was 18, how many questions were answered correct      Log On