I have zero clue on how to solve this, if someone would be kind of enough to show me exactly how you would go about solving I would be eternally grateful:
You can see exactly how on this page
Solve for exact value and to the ten thousandth
Do like they show in that page: divide through by 5. Then do natural logs on both sides. Then minus the 1 and divide through by -4. Plug it all into your cal for the "to the ten thousandth" value.
If you get stuck, please write back showing what you've done. Thanks.