Which of the following is approximately equal to the product of the multiplication problem below?

21/5 × 19/4

a. 40
b. 19
c. 20

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.

The table shows the total distance that myra runs over different time periods. which describes myra’s distance as time increases? increasing decreasing zero constant

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)