According to the priority level of their service level packages and problems,the technician visit the customers visits in the following order.
1) Platinum service level
2) Gold Service level
3) <span>Silver service level
4) Bronze service level
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The axis of symmetry always passes through the vertex of the parabola. The x-coordinate of the vertex is the equation of the axis of symmetry of the parabola. For a quadratic function in standard form, y = ax 2 + bx + c, the axis of symmetry is a vertical line.
