Any odds with a minus sign (like -110) indicate that you must risk more than you'll win  a $110 bet at -110 would win $100. Any odds with a plus sign (like +150) means you'll win more than you risked  a $100 bet at +150 wins $150. If you win a bet, you'll receive the payout, plus your original wager back.
The BET 500 was light car model developed by BET, a small Greek vehicle manufacturer. Introduced in 1973, it used a Fiat 500cc engine, had a metal body and seated up to five passengers.