Fill in each blank with the appropriate response.The graph of y = -3x2 can be obtained from the graph of y = x2 by vertically stretching by a factor of 
and reflecting across the 
-axis.
A. -3; y
B. 3; y
C. -3; x
D. 3; x
Answer: D
Mathematics
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Without using a calculator, give the exact trigonometric function value with rational denominator.sin 30°
A. 
B. 
C. 
D. 
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Represent the shaded area in the figure group with an improper fraction.
A. 
B. 
C. 
D. 
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Solve the problem.A carousel has a radius of 18 feet and takes 31 seconds to make one complete revolution. What is the linear speed of the carousel at its outside edge? Express the answer in feet per second. If necessary, round the answer to two decimal places.
A. 10.82 feet per second B. 113.1 feet per second C. 0.58 feet per second D. 3.65 feet per second
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Solve the system by graphing. 3x + y = 16 4y = 64 - 12x
A. (5, 1) B. Infinitely many solutions C. No solution D. (0, 16)
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