A XYZ business sells handmade candles and has a quadratic profit function represented by P(x)=-2x^2 + 4x + 70, where P(x) is the profit in dollars and x is the number of items sold (in hundreds). The business wants to ensure that it makes a profit greater than or equal to zero. Determine the number of items (in hundreds) the business must sell to ensure that it makes a profit of at least zero dollars.
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