I am pretty sure its C but I might be wrong

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.

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?