Explanation:
If the area of the bean field is 440ft^2 and each bag of fertilizer covers 100 ft^2, then Farmer Bob will need:
440 ft^2 / 100 ft^2 per bag = 4.4 bags of fertilizer
Since Farmer Bob can't buy a fraction of a bag, he will need to round up to 5 bags of fertilizer.
The total cost of the fertilizer will be the number of bags multiplied by the cost per bag, which is $5.50. Therefore, the total cost of the fertilizer will be:
5 bags x $5.50 per bag = $27.50