Find the coordinates of the vertex of the quadratic function.f(x) = -7(x - 4)2 - 8
A. (-8, 4)
B. (4, -8)
C. (-7, -4)
D. (-4, -8)
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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Find an equation of the line.Perpendicular to y = -12, through (-2, -3)
A. x = 
B. x = -2
C. y = -3
D. y = 
x - 
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Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.log4 21 ? log21 64
A. 21 B. 3 C. 4 D. 64
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Solve by using the multiplication principle to clear fractions.- 
= - 
- 
x
A. - 
B. 
C. - 
D. 
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