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Can someone me and do the problem plz so i can understand it more better

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path