Question

Solve the compound inequality 60 < 20u < 120.

6 < u < 3
3 < u < 6
6 > u > 7
3 > u < 6

Solve the compound inequality 9 + 3n 3 or 5n < 30.

n -2 or n < 6
n -2 or n < 6
n -5 or n > 6
n -5 or n > 6

Solve the compound inequality 6b < 42 or 4b + 12 > 8.

b < 6 or b > 5
b < 7 or b > -1
b > 6 or b < 5
b < 7 or b > 1

Any help is appreciated :3