Use a graphing calculator to sketch the graph of the quadratic equation, and then determine the x-intervals over which the graph is increasing and decreasing.y = -0.2x2 + 0.7x + 6.9
A. Increasing: (x < -1.75), Decreasing: (x > -1.75)
B. Increasing: (x < 1.75), Decreasing: (x > 1.75)
C. Increasing: (x < 6.9), Decreasing: (x > 6.9)
D. Increasing: (x < 6.2875), Decreasing: (x > 6.2875)
Answer: B
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A. 12
B. 
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