Final answer:
The cost to cut the hay per acre is $3.40, calculated by dividing the total cost of $105 by the total number of acres, which is 30.9.
Step-by-step explanation:
The cost to cut the hay per acre can be calculated by dividing the total cost by the total number of acres. In this case, you were given a total cost of $105 for 30.9 acres of alfalfa hay.
To find the cost per acre, you would perform this division:
Cost per acre = Total cost ÷ Total acres
Cost per acre = $105 ÷ 30.9 acres
Cost per acre = approximately $3.40/acre