Final answer:
To find out how much grass seed is needed for 1 acre, set up a proportion using the given bag weight and coverage. Cross-multiply to solve for the amount of grass seed needed. The answer is 20 pounds.
Step-by-step explanation:
To find out how much grass seed is needed for 1 acre, we need to use the given information that a 2 (1/2) pound bag of grass seed covers g of an acre. Let's first convert the bag weight to a decimal: 2 (1/2) pounds = 2.5 pounds. We can set up a proportion to solve for the amount of grass seed needed for 1 acre:
(2.5 pounds) / (g of an acre) = 1 pound / 1 acre
Cross-multiplying gives us:
2.5 pounds = g of an acre
So, g = 2.5 pounds. Therefore, the answer is A. 20 pounds.