What are the two requirements for a density curve?

The density curve must satisfy two important conditions.

These two conditions are:
1- The total area under the density curve MUST BE equal to 1.
     (Area total = 1)
2- Every point that is on the curve must have a vertical height that is equal to or greater than zero
(vertical height for each point ≥ zero)

19.2

Step-by-step explanation:

120/75=1.6

12 times 1.6=19.2