CJ has three more pet pigs than Jacqui has. Let's write an expression to represent how many pigs CJ has. To do that, we follow these steps: Identify the constants and the variables. There is one known number or constant here: it is 3. CJ has 3 more pigs than Jacqui. That number, 3, won't change. The variable is the number of pets Jacqui has. Let's call that j. Identify the operations. The phrase "more than" tells us we need to add. There are no other operations in this expression. Rewrite the phrase as an expression. "Three more pet pigs than Jacqui has" is 3 + j. Last year, Shailyn read four fewer books than Oswaldo. Which expression shows how many books Shailyn read last year? A 4b B b + 4 C b - 4 D b - 1