I need help with this please. Evaluate 5a+ 4b2 when a = 7 and b = 6 ​

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.

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Which of the following equations is equivalent to x/3-6/x=1