What is the y-intercept in this equation f(x) = 4x2 – 3x + 1

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 expressions are equivalent to -6 + 3m

You can find the constant of proportionality by finding the ratio of