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 = x2 + 2x - 3
A. Increasing: (x > -1), Decreasing: (x < -1)
B. Increasing: (x > 1), Decreasing: (x < 1)
C. Increasing: (x < -1), Decreasing: (x > -1)
D. Increasing: (x <1), Decreasing: (x > 1)
Answer: A
Mathematics
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Sketch the graph of the function.
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A. ?
B. ?
C. ?
D. ?
E. ?
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Find an equation of variation in which the following are true.y varies jointly as x and z and inversely as the product of w and p, and 
when x = 5, z = 10, 
and 
A. y = 
B. y = 
C. y = 
D. y = 
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Write out the first five terms of the sequence.an = 2n
A. 1, 4, 9, 16, 25 B. 1, 2, 4, 8, 16 C. 4, 8, 16, 32, 64 D. 2, 4, 8, 16, 32
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Find the graphical solution of the inequality.
Mathematics