Use a property of equality to solve the equation.
A. 
B. 
C. 
D. 
E. 
Answer: B
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Sketch the graph of the equation. Identify the vertex and the intercepts.y = x2 - 4x + 8
A. Opens: Down;
Vertex: (2, -4);
x-intercepts: none;
y-intercept: (0, -8)
B. Opens: Up;
Vertex: (2, 4);
x-intercepts: none;
y-intercept: (0, 8)
C. Opens: Up;
Vertex: (2, -4);
x-intercepts: (0, 0) and (4, 0);
y-intercept: (0, 0)
D. Opens: Up;
Vertex: 
;
x-intercepts: (1, 0) and (8, 0);
y-intercept: (0, 8)
Describe the graph of the polar equation. 9r cos ? + r sin ? = 6
A. Vertical line passing through (9, 0) B. Parabola with vertex (9, 6) opening upward C. Line with slope 6 and y-intercept (0, 9) D. Line with slope -9 and y-intercept (0, 6)
Use the Urban Prices Index Table to answer the question. The table shows what $100 worth of an item costs today. 
*All figures are expressed as a percent of the base of 100 from two decades ago.Urban area: HoustonWhat does $100 of Medical cost today?
A. $202.30 B. $191.10 C. $168.50 D. $340.40
Find the mean of the random variable x associated with the probability density function over the indicated interval.
?
; 
?
A. 
B. ?
C. ?
D. ?
E. ?