Saturday, 10 a.m. to 3 p.m., Petrack Park, annual art exhibit and show sponsored by Pahrump Arts Council, vendors, demonstrations, food, raffles. Saturday, 2 p.m., “Eat Cake,” a murder mystery play, Amargosa Opera House, tickets $30, $15 for children, advance purchase recommended, call 760-852-4441 for information or tickets....