Evaluate: 3-³=

O A. 1/9

O B. -27

O C. 1/27

O D. -9

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.

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

When y’all answer can y’all explain too !