Fùck u ‏‏‎ ‏‏‎ ‏‏‎ ‏‏‎ ‏‏‎ ​

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.

Can someone me out here number 4 plz

What is the anwers for 9+2x=5x-3-x