For the given quadratic equation, determine whether the parabola opens up or down, find the vertex of the parabola, and find the axis of symmetry.y = -x2 - 7x + 4
A. down; 
; x = - 
B. down; 
; x = 
C. down; 
; x = - 
D. down; 
; x = 
Answer: A
Mathematics
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Sketch the graph and show all relative extrema and inflection points.y = 3x4 - 8x3
A. 
Relative minimum 
Relative maximum (0, 0)
Inflection point: 
B. 
Relative minimum: (2, -16), and (0, 0)
Inflection point: 
C. 
Relative minimum: (2, -16)
Inflection points: (0, 0) and 
D. 
Relative minimum: (2, -16)
Inflection points: (0, 0) and 
Mathematics
How many significant digits are in a measurement of 2000mL?
A. 1 B. 2 C. 4 D. undetermined
Mathematics
Find the limit, if it exists.
A. 12 B. 2 C. Does not exist D. 120
Mathematics
Represent the fraction as a decimal by using the long-division algorithm.
A. 1.1
B. 1.1
C. 1.
D. 1.
Mathematics