Answer:

Explanation:
Given,
The number of hour he already practiced in this week = 3,
Also, she practices for three fourth of an hour each session,
If x be the number of remaining session,
So, the additional number of hours he practiced in this week =

Thus, the total number of hours he practiced in this week =

According to the question,
Total number of hours ≥ 12 hours

Which is the required inequality.