Last updated: 12/7/2025
Cookies are small text files that are placed on your computer or mobile device when you visit our website. They help us provide you with a better experience by remembering your preferences and understanding how you use our service.
We use cookies for the following purposes:
These cookies are necessary for the website to function and cannot be switched off. They are usually only set in response to actions made by you.
These cookies allow the website to remember choices you make and provide enhanced, more personal features, such as your preferred grade level or problem types.
These cookies help us understand how visitors interact with our website by collecting and reporting information anonymously.
You can control and/or delete cookies as you wish. You can delete all cookies that are already on your computer and you can set most browsers to prevent them from being placed. However, if you do this, you may have to manually adjust some preferences every time you visit our site and some services and functionalities may not work.
Most web browsers allow some control of most cookies through the browser settings. To find out more about cookies, including how to see what cookies have been set and how to manage and delete them, visit www.aboutcookies.org.
We may update this Cookie Policy from time to time. We will notify you of any changes by posting the new Cookie Policy on this page and updating the "last updated" date.
If you have any questions about our use of cookies, please contact us through our contact form.