Answer
Slayer's debut album, "Show No Mercy," was financed by the savings accumulated from Tom Araya's job as a respiratory therapist. This album marked the beginning of Slayer's legacy in the thrash metal scene, solidifying their position as one of the "big four" bands of the genre alongside Metallica, Megadeth, and Anthrax. The funds from Araya's job helped bring their musical vision to life and launch their successful career.