Answer:


Step-by-step explanation:
considering the equation

solving






solving





also solving





Therefore,


Answer:
B) Subtract 12-4 to calculate the range of this data set
To find the median cancel out numbers on both sides, until one is left in the middle and if there are two in the middle add them up and divide by two.
So in this case the median is
53+78
131 / 2
65.5


so the ODE is indeed exact and there is a solution of the form
. We have




With
, we have

so
