You can't have searched very hard......
to mount:
mount -t iso9660 yourfile.img /foo/example -o loop
(replaceing /foo/example with the directory you'd like to mount the image to)
to burn, use cdrecord, read the CD-Writing HOWTO, (
http://www.faqs.org/docs/Linux-HOWTO...ing-HOWTO.html) for details of how to install and configure this package. You can use it from the command line, or obtain a GUI front-end like XCDroast or eRoaster, to make things a bit simpler....