Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

What is the smallest integer n such that n\sqrt{2} is greater than 20

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"