Question: Brandon sold 86 geckos last year. He sold twice that many the year before. How many geckos has Brandon sold in the last two years?
Answer: Last year: 86 geckos. 2 years ago: 86(2) = 172. Total number of geckos sold 86 + 172 = 258 geckos. The answer is 258.

Question: Trevor buys three bouquets of carnations. The first included 9 carnations, and the second included 14 carnations. If the average number of carnations in the bouquets is 12, how many carnations were in the third bouquet?
Answer: There are 3 bouquets. The total is the average times the number of bouquets, or 12 * 3 = 36. There are 9 + 14 = 23 accounted for. The third included 36 - 23 = 13 carnations. The answer is 13.

Question: Martin has 18 goldfish. Each week 5 goldfish die. Martin purchases 3 new goldfish every week. How many goldfish will Martin have in 7 weeks?
Answer: In 7 weeks 5 * 7 = 35 goldfish die. In 7 weeks, Martin purchases 3 * 7 = 21 goldfish. In 7 weeks, Martin will have 18 - 35 + 21 = 4 goldfish. The answer is 4.

Question: Donovan Mitchell is currently averaging 26 points per game. His team has played 15 games this season. He has a goal of averaging 30 points per game for the entire 20 game season. How many points does he need to average per game to reach his goal?
Answer:
At this point in the season, Donovan has scored 26 * 15 = 390 points. To reach his goal of 30 points per game, he would have to finish the season with a total of 30 * 20 = 600 points. For the remaining 5 games, Donovan needs to score 600 - 390 = 210 points. Therefore, he needs to average 210 / 5 = 42 points per game. The answer is 42.