<prompt> Translate the following text to SwahiliRecent business projections for Las Vegas predict challenges; tourism revenues must increase substantially to sustain what is already built, while actual figures show visitation as steady or declining.  <response>: Utabiri wa hivi karibuni wa biashara kwa Las Vegas unatabiri changamoto; mapato ya utalii lazima yaongezewa kwa kiasi kikubwa ili kudumisha kile ambacho tayari kimejengwa, wakati takwimu halisi zinaonyesha ziara kama thabiti au kupungua. 