How many of the 80 salespeople had sales of more than $4.5 million?
a-20
b-25
c-75
d-60

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.

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?