One moving company charges $800 plus $16 per hour. Another moving company charges
$720 plus $21 per hour. At what number of hours will the charge by both companies be the
same? What is the charge?

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.

Just tell me how to set up the equation.

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10