Solve for x. logb(x + 2) + logb x = logb 24

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

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