If u = { all positive integers } and a = {x|x € u and x is an odd positive integer }, which describes a°?

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew

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