Question: 7. [13 pts) Solve the quadratic equation 2 x2 + 3x 5 = 0 8. (13 pts) A store has been selling 220 at-screen TVs

7. [13 pts) Solve the quadratic equation 2 x2 + 3x 5 = 0 8. (13 pts) A store has been selling 220 at-screen TVs a week at $430 each. A market survey indicates that for each $25 rebate offered to buyers, the number of TVs sold wi increase by 15 a week. How large of a rebate should the store offer to maximize its revenue? Hint: Revenue is price times quantity

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