In Exercises 8285, find the vertex for each parabola. Then determine a reasonable viewing rectangle on your
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In Exercises 82–85, find the vertex for each parabola. Then determine a reasonable viewing rectangle on your graphing utility and use it to graph the quadratic function.
y = -4x2 + 20x + 160
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y 4x 20x 160 b 20 X 2a 8 y 4...View the full answer
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