Sketch the lines which pass through the following points with the given gradients
a)point (2, 1), gradient 3
b)point (5,0), gradient - 2
c)point (1, -3), gradient-3
d)point (-2,-2), gradient 2/3
e)point (5,-2), gradient​ -4/3

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.

What is the total area of the figure?

If np3 /nc2 = 6, find the value of n