Answer:
The inequality that represents the word problem is the following:
15 + (3/2)t ≤ 21
Explanation:
Because Noor gave a 1/3 of a sheet to each of the 45 students at recess this equals to 15.
45×⅓ = 15 sheets for students
And because she wants to give each teacher 1 and 1/2 sheets, that is the same as giving them 3/2.