Final answer:
The inequality that represents the number of cookies the 6th graders need to sell is n ≥ 480.
Step-by-step explanation:
The 6th graders need to raise at least $96.00 to buy new playground equipment, and they plan to sell cookies for $0.20 each. To find the number of cookies they need to sell, we divide the total amount needed by the price of each cookie:
n ≥ 96 ÷ 0.20
Simplifying the inequality:
n ≥ 480
Therefore, the inequality that represents the number of cookies they need to sell is n ≥ 480.