Help redirecting a top level domain to a subfolder

This seems simple, but it’s not working for me. I’ve installed a joomal site at

All I want is to get it in the .htaccess file so that accessing automatically and transparently takes you to

So two things really:
1.) redirect to the /test subfolder when hitting the main domain.
2.) making the sub folder transparent so it does NOT appear in the url

I’m pulling my hair out over this one. Anyone?