The revenue that an apparel company earns each month for its different product lines fluctuates throughout the year. Over the course of a year, the revenue earned from clothing sales each month is modeled by function c, where x is the number of months since the beginning of the year.
![The revenue that an apparel company earns each month for its different product lines fluctuates throughout the year Over the course of a year the revenue earned class=](https://us-static.z-dn.net/files/d43/feb4a3d7f648532a82eb8f38e5d6c0f2.png)