Is this a supplementary, complementary, or vertical angle?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

What is always true when two whole numbers are subtracted?