Eric eats 1/6 of an apple pie and jack eats 1/4 of the apple pie. how much of the pie has been eaten?
a) 1/5
b) 5/12
c) 7/12
d) 1/3

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.

Witch represents the inverse of the function f(x)=1/4x-12

Can someone me out here number 4 plz