How do you change a tif or jpeg file to a Pdf, Htm, txt, or rtf file.?

I scanned a document and I saved it a a JPEG and a TIF. I need to submit it to online and the place said it had to be in a PDF, Htm, txt, or a rtf. How do I do it?How do you change a tif or jpeg file to a Pdf, Htm, txt, or rtf file.?
open up the picture in powerpoint. dont do anything, just right click it and 'save picture as', then save as file type you need. this is a very basic way of doing it.How do you change a tif or jpeg file to a Pdf, Htm, txt, or rtf file.?
there is freeware that will put jpeg into a pdf... google ';jpg to pdf';