Question

Which of the following is a solution of the compound inequality -1 < 2n + 1 < 5?
Answer

-1 < n < 5

n > 2 or n < -1

-1 < n < 2

n < -2 or n > 4

Answer 1

\[-1 < 2n + 1 < 5\]subtract 1 from all sides:\[-2<2n<4\]divide all sides by 2:\[-1<n<2\]
Option \(\text{C}\)