Ms. Clark has 21 acres of tobacco. For weed control, she applied 8.3 fluid ounces per acre of herbicide A and 2.1 pints per acre of herbicide B. She applied 310-240-270 units of fertilizer per acre. She used 46-0-0 urea at $500 per ton, 18-46-0 DAP at $708 per ton, and 0-0-50 sulfate of potash at $684 per ton. She planted the tobacco in 36-inch rows with the plants 18 inches apart in the rows.
a. How many quarts of herbicide A were applied?
b. How many gallons of herbicide were applied?
c. How many pounds per acre of bulk fertilizer were used?
d. What did the fertilizer cost?
e. What did the fertilizer cost per ton?
f. How many plants were planted per acre?
g. Express the total number of plants in the field using scientific notation with the correct number of significant digits.
a. 5.4 pt
b. 5.5 gal
c. 1,532 lb/a
d. $10,226.33
e. $635.18/ton
f. 9,680 plants/a
g. 2.0 × 105 plants
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