Find the vertex and zeros and use them to determine a range for a graphing utility that

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Find the vertex and zeros and use them to determine a range for a graphing utility that includes these values; graph the function with that range.

1. y = 63 + 0.2x - 0.01x2

2. y = 0.2x2 + 16x + 140

3. y = 0.0001x2 - 0.01

4. y = 0.01x - 0.001x2

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