Plzz help it do today and ill mark u brainliest

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

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

Which expression is equivalent to -12(3x-3/4)