Find the vertex of the parabola.
?
y = 3x2 - 1
?
A. (-1, 3)
B. (0, -1)
C. (3, -1)
D. (-1, 0)
E. (0, 3)
Answer: B
Mathematics
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Multiply.(-8y)(-7y9)
A. -15y9 B. 56y10 C. -56y10 D. 8y - 7y9
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Solve the problem.Find h as indicated in the figure. Round to the nearest meter.
A. 50 m B. 65 m C. 165 m D. 86 m
Mathematics
Provide an appropriate response.Explain what is wrong with the following solution for the equation 
in the interval 
tan 3? = 
tan ? = 
? = 
or ? = 
-17.0px;" />
What will be an ideal response?
Mathematics
Find the center and radius of the circle.x2 + y2 - 16x + 8y + 80 = 36
A. (-8, 4), r = 36 B. (-4, 8), r = 6 C. (8, -4), r = 6 D. (4, -8), r = 36
Mathematics