Find the range of data set 10, 18, 21, 28, 12, 20

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

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

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.