What is 9 + 10 ( I swear to god)

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.

Average acceleration: i have no idea how to do this.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?