Close Contents Introduction Questions and Answers More Actions PDF Questions Make a copy Study Flashcards Play Quiz Questions and Answers What is the value of 2 + 2? 6 3 4 (correct) 5 What is the square root of 144? 16 12 (correct) 14 10 Simplify the expression: 3x + 2y - 4x + y -x + 3y -2x + 3y -x - y -x + y (correct)