LAS VEGAS: Health insurance costs for about 240,000 Nevadans who buy individual or small-group plans are expected to rise next year, and state officials want consumers to offer feedback before the proposed rates are locked in in coming weeks. The average cost of an individual plan will go up 15 percent in 2017, while the average cost of a small-group plan will rise 4 percent, the Nevada Division of Insurance said. The agency recently launched a $49,000 Facebook and web ad campaign inviting consumers to browse the rates insurers are proposing for the nearly 600 plans available on the marketplace and comment on whether they’re appropriate. “We’re always looking for comments, and we haven’t received that many in the past,” division spokeswoman Yeraldin Deavila said. “This is an opportunity for consumers’ voices to be heard.”