What’s the value of x?

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

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.

Abank gives 6.5% interest per year. what is the growth factor b in this situation?