Write a function that models the relationship. z varies jointly with x and y and inversely with w. When x=3, y=4, w=2, and z=84. Find w if z=60, x=1/2, y=6

Bugs bunny was 33 meters below ground, digging his way toward pismo beach, when he realized he wanted to be above ground. he turned and dug through the dirt diagonally for 80 meters until he was above ground

Me find the value of x each figure.

What is always true when two whole numbers are subtracted?