If point (4, 5) is on the graph of a function, which equation must be true? f(5)=4
f(5,4)=9
f(4)=5
f(5,4)=1

Which ratio is equivalent to 10: 85

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 difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.