Evaluate -a + (-b) where a= 6.05 and b= 3.611

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

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