AD Baker

The line above that is the same as   (1 * (5/2)^x ) + (125/8 * (5/2)^x)   if you factor out (5/2)^x from each expression, you get   (1 + 125/8) * (5/2/^x

1. Community
2. Study Group
3. Confusing factoring out problem

As far as I know, Khan Academy does not offer that kind of service.  Have you tried this page:                 https://www.khanacademy.org/teachers About two-thirds of the way down is a link to joi...

1. Community
2. Technical Issues and Workarounds
3. Customer Service /I.T 800# Please

You may want to open a ticket with the Help Center (https://khanacademy.zendesk.com/).

1. Community
2. Technical Issues and Workarounds
3. Customer Service /I.T 800# Please

Siempre,  That is a good explanation of what the term 'Cold War' means and which countries are involved.  This should probably be in your DBQ somewhere, but for your thesis, you need to reflect the...

1. Community
2. Study Group
3. I need help with my DBQ

Please see the notes from Laurie on this post:   https://support.khanacademy.org/hc/en-us/community/posts/360077758032-Update-32-new-avatars-available-

1. Community
2. Content Requests and Feedback
3. Backgrounds

You are correct.  On a real test, in a real school, with a real teacher, you can check all of your answers before submitting. Khan Academy .is not a real school.  It is a learning aid.  If a studen...

1. Community
2. Feature Requests and General Site Feedback
3. Add a reset button, please!

Go to your Learner Home Page (this is the page you see when you first log in to KA). You can get to the Learner Home Page by clicking the Khan Academy logo at the top-center of any KA page.)   In t...

1. Community
2. Technical Issues and Workarounds
3. Khan Academy Avatars

For more information on the decision to have a single background, please see the notes from Laurie on this post: https://support.khanacademy.org/hc/en-us/community/posts/360077758032-Update-32-new-...

1. Community
2. General Khan Academy Questions
3. How can I change my icon and background?

The auto-grader can be a little mysterious.  It accepts some things and not others. Glad you were able to figure it out.

1. Community
2. Computing Platform Community Discussions
3. Challenge: Smileyface Step 4 won't advance

Try changing `faceObj` to `face`.  It is possible that the auto-grader is set to reject `faceObj` because the object literal was supposed to be replaced by the constructor.

1. Community
2. Computing Platform Community Discussions
3. Challenge: Smileyface Step 4 won't advance