The y intercept is 3 because that is where the point aligns to the axis
1800/3 = 600
Every pound covers 600 square feet
8400/600 = 14
<span>14/4 = 3.5 (round up) so it would become 4.
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You would need 4 bags.
I hope this helps!
The other size is 10 too and there will be enough spaces with 1 foot left!!!! :)
The first question is c i believe, I dont have time to answer the others
