# Write an equation in three variables to model the revenue of company

**Question description**

A pharmaceutical company has created a new cancer treatment. The company sells this treatment to hospitals for 100$ per treatment, pharmacies 50$ per treatment, and sells samples to doctors for 5$ per sample. Revenue is the money this company receives from selling its new product. Let x and y represent the number of treatments sold to hospitals and pharmacies respectively, and let z represent the number of samples sold to doctors. Write an equation in three variables that can be used to model the Revenue of the company.

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