Simplification
-4a+b+3c+3a-3b+c

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.

Asquare parking lot has 6,400 square meters what is the length in meters

Secant be and cf intersect at point d inside a what is the measure of cde