Answer:
11 bags
Explanation:
Let x bags of fertilizer should be purchased.
The dimension of rectangular lawn is 410 feet by 65 feet.
The area of rectangle is given by
Area = length × width
Thus, the area of rectangular lawn is
Area = 410 × 65
Area = 26650
Now, one bag of fertilizer covers 2500 square feet of lawn.
Thus, we have

Hence, the required number of bags = 11.