Posted by **Shelbie** on Monday, January 7, 2013 at 7:27pm.

Solve each inequality by using algebra.

8. x 2 + 10x + 1 ≥ 12

9. x 2 + 13x + 45 < 5

10. -2x 2 + 3x + 12 > 10

11. Business A consultant advises the owners of a beauty salon that their profit p each month can be modeled by p(x) = -50x 2 + 3500x - 2500, where x is the average cost that a customer is charged. What range of costs will bring in a profit of at least $50,000?

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