What comes after a decagon?

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

The sum of two numbers is 12 and their difference is 18 what are the two numbers

What’s -11-33k and factor each expression completely