# Vertex Formula

### A model for a company's revenue from selling a software package is R(p)=-2.5p^2+550p, where p is the price in dollars of the software. What price will maximize the revenue? Find the maximum revenue.

**Identify** the *a*, *b*, and *c *of the equation. HINT: USE THE QUADRATIC FUNCTION FORMULA

**Plug** *a* and *b* back into the **Vertex** **Formula**.

**SOLVE**

The answer you just solved for maximizes the revenue, but the question also asks for the maximum revenue. To find the maximum revenue** plug the answer you just solved for into the the** **original** **formula**.

**Solve** for the maximum revenue.

You have now finished and solved the vertex formula equation.