What is the algebraic expression for the area of this house block?

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).