Write a function that models each variation
X = 1/3, y = 1/5, and r = 3 when z = 1/2, and z varies directly with x and inversely with the product of r² and y.

Here we need to write a function that models each variation, so we know that:

We also know that z varies directly with x and inversely with the product of r² and y. In other words, we can write z as follows:

Therefore, the model is:

3 qrs + 3/2 xy hope this : /

step-by-step explanation: