5n + 2 > 12 and 7n - 5 < 23; n must be between which numbers?

5n + 2 > 12 and 7n - 5 < 23; n must be between which numbers?

Quiz

Answer/Solution

2 and 4

Steps/Work

5n > 10 --> n > 2
7n < 28 --> n < 4
2 < n < 4
Answer: B