Answer: Revenue function is the required function that will represents the relationship between price and quantity sold.
Explanation:
Revenue function represents the relationship between price and number of items sold.
As Revenue refers to the total receipt earned from selling the number of items at a particular price.
Mathematically, it is expressed as
![R(x)=p* q\\\\here,\\\\p\ denotes\ price\\\\q\ denotes\ quantity\ sold](https://img.qammunity.org/2020/formulas/mathematics/high-school/cl3zkxo5j7oufqzubygc2xs4z98nkpdp79.png)
Hence, Revenue function is the required function that will represents the relationship between price and quantity sold.