Final answer:
To find the number of acres that can be planted with the given amount of seed, divide the total amount of seed by the amount of seed required per acre.
Step-by-step explanation:
To find the number of acres of grass that can be planted, we need to divide the total amount of seed by the amount of seed required to plant one acre.
Therefore, the number of acres that can be planted is 8.64 pounds of seed divided by 7.2 pounds of seed per acre, which is approximately 1.2 acres.