Find the vertex, the focus, and the directrix of the parabola.3x2 - 12x - y + 16 = 0
A. V: (2, 4); F: 
; D: y = 
B. V: 
; F: (2, 16); D: x = 8
C. V: 
; F: 
; D: x = 
D. V: 
; F: (2, 7); D: x = 1
Answer: A
Mathematics
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Represent the quantity by an integer.$4433 out of debt
A. 4433 B. -4433
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Write the first four terms of the geometric sequence.a = 160, r > 0, a5 = 10
A. 160, -80, 40, -20 B. 160, 80, 40, 20 C. 80, 40, 20, 10 D. 160, 80, 40, 10
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For the function as defined that is one-to-one, graph f and f-1 on the same axes.f(x) = x2 + 5
A. 
B. 
C. 
D. not one-to-one
Mathematics
Solve the problem.The polynomial G(x) = -0.006x4 + 0.140x3 - 0.53x2 + 1.79x measures the concentration of a dye in the bloodstream x seconds after it is injected. Does the concentration increase between 11 and 12 seconds?
A. Yes B. No
Mathematics