Answer:
15
Step-by-step explanation:
Take x as how many pounds you need for the 6000 square feet
7 pounds x pounds
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2800 square feet 6000 square feet
7*6000=42000
42000/2800=15
or you could find how many pounds you would need for 1 square feet.
7 pounds .0025 ponds
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2800 square feet 1 square feet
and then you could just multiply .0025 and 6000
so [tex].0025 * 6000[/tex] = 15