2x + 3 is greater than or equal to 13. she needs to do atleast 10 chores
Good. I hope you get locked, most mainly banned. Nobody needs you, “FrIsK”
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Hello! Remember you have to write complete questions in order to get good and exact answers. Anyway, I'll help you either way. A sector is a region of a circle between two radii. Let's assume the sector as:

Then, we can find the central angle by the following equation:

But:

Then:

A parabola, a graph of a quadratic function, cannot have a maximum vertex and a minimum vertex at the same time because of the shape of the graph. A parabola is a u-shaped graph. The vertex of the parabola is the point where the u changes direction; if it was increasing, it starts to decrease, and if it was decreasing, it starts to increase. Since a parabola only changes direction once, there will either be a minimum or a maximum, not both.