Which pair of angles is an example of supplementary angles?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

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