Solve: 2x + 4 < 18, where x is a natural number.

Solve: 5 − 7x ≥ 33, where x is an integer.

If one worker earns Rs.200 per day, how many workers can be employed with in a monthly budget of Rs.3 Lakh?

Represent the solutions −8 < 2x < 10 in a number line, where x is a natural number.

Represent the solutions of 3x + 9 ≤ 12 in a number line, where x is an integer.