Choose the equation that matches the graph.
y = -x2 + 2x - 8; y = x2 + 2x - 8y = -x2 - 2x - 8; y = x2 - 2x + 8
A. y = -x2 + 2x - 8
B. y = -x2 - 2x - 8
C. y = x2 + 2x - 8
D. y = x2 - 2x + 8
Answer: B
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Determine the center, foci, and vertices of the ellipse.81x2 + 25y2 = 2025
A. center at (0, 0)
foci at (0, 9) and (5, 0)
vertices at (0, 81) and (25, 0)
B. center at (0, 0)
foci at (0, - 2
) and (0, 2
)
vertices at (0, -9), (0, 9)
C. center at (0, 0)
foci at (0, -9) and (0, 9)
vertices at (0, -81), (0, 81)
D. center at (0, 0)
foci at (- 2
, 0) and (2
, 0)
vertices at (-9, 0), (9, 0)
Find a so that the statement is true.
A. 5 B. 6 C. 0 D. 4 E. 2
Solve the variation problem.The distance it takes to stop a car varies directly as the square of the speed of the car. If it takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is required for a speed of 
per hour?
A. 204.46 feet B. 204.12 feet C. 216.42 feet D. 174.96 feet
Divide using long division.
A. 3x - 4
B. 3x + 4 + 
C. 3x - 4 - 
D. 3x - 4 + 