Welcome to the MongoDB Community Forums @Dave_Shreve !
For a new installation of MongoDB server you should start directly with your intended version of MongoDB rather than following an upgrade path: Install MongoDB Community Edition on Ubuntu.
Please provide a few more details:
-
your version of Ubuntu
-
the
wget
command include the key you added -
copy of the
apt-get
output from your terminal (Formatting code and log snippets in posts has some helpful tips for readability).
Thanks,
Stennie