Which equation is represented by the graph?

Write the sentence as an equation. b increased by 281 is d

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.

Which of the following is the shape of a cross section of the figure shown below