What was the interest rate if your balance on and investment of 857$ at the end of six years is 1,268.36

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 quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

I'm marking the brainliest and it's 15 points