1. Pal, pail, lapis
2. Otter, hyena, horse, panda, camel
3. Patrick is 15 and Meghan is 7. The sum of their ages three years ago was 16. Now it is 22 because each has aged three years. An algebraic equation to solve this problem is: 22–M=3(M–2).
5. a) Pear, spear b) Kin, skin c) Hare, share
6. Summer, hummer, hammer, hamper, harper, harder, warder, wander, winder, winter. (There may be other ways.)
Answer: 4 mph. (She ran 12 miles in three hours.)
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Question: In June 2012, American Airlines added a new route to Brazil and now has service to seven Brazilian cities. How many of them can you name?
Answer: Our new service to Manaus in June 2012 joined our service to the Brazilian cities of Rio de Janeiro, São Paulo, Belo Horizonte, Salvador, Recife and Brasilia.