Chapter 6 - Section 6.1 - Sets and Set Operations - Exercises - Page 405: 33

$(A\cap B)\cup C$={Janet,Jello,Justin,Sally,Solly,Molly,Jolly}

determine which members the two sets have "in common". $(A\cap B)$={Janet,Jello,Justin} Then use the definition of union to get $(A\cap B)\cup C$ $(A\cap B)\cup C$={Janet,Jello,Justin,Sally,Solly,Molly,Jolly}