Suppose that n represents an integer. What expression represents the next larger integer ? the previous integer? the sum of these three consecutive integers?

next expression is n+1,

previous expression is n-1

sum of 3 consecutive integers is 3n

Step-by-step explanation:

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we need to divide the number of toy dinosaurs, 156, by the number of brothers, 4:

in order to estimate, we can use compatible numbers:

156 ÷ 4

  ↓

160   ÷ 4 = 40        

the correct answer is a).