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 + x + 5
A. Increasing: (x < 0.5), Decreasing: (x > 0.5)
B. Increasing: (x > 0.5), Decreasing: (x < 0.5)
C. Increasing: (x < -0.5), Decreasing: (x > -0.5)
D. Increasing: (x > -0.5), Decreasing: (x < -0.5)
Answer: D
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Use the given conditions to write an equation for the line in slope-intercept form.Passing through (-8, -11) and parallel to y = 8
A. x = -8 B. y = -11 C. y = -8 D. x = -11
Simplify by factoring.
A. 6
B. 252x
C. 7x2 
D. 6x
Solve the problem.A bakery owner sells rectangular birthday cakes that are 5 inches longer than they are wide. To increase his profit, he decides to decrease both the length and width by 3 inches. If the area of the new cake is 66 in.2 smaller than the old cake, then what are the length and width of the old cake?
A. length = 15 in. ; width = 10 in. B. length = 16 in. ; width = 8 in. C. length = 17 in. ; width = 11 in. D. length = 14 in. ; width = 9 in.
Find the intercepts and then graph the line.3x + 2y = 12
A. x-intercept: (6, 0); y-intercept: (0, 4)
B. x-intercept: (4, 0); y-intercept: (0, - 6)
C. x-intercept: (4, 0); y-intercept: (0, 6)
D. x-intercept: (6, 0); y-intercept: (0, - 4)