Solve.In order to make a profit an automobile dealer must sell at least 180 vehicles a month. The dealer plans to sell x units of one model and y units of another model. This can be represented by 
. Graph the inequality.
A. 
B. 
C. 
D. 
Answer: A
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Solve.A $320 lamp is on sale at 45% off. What is the discount?
A. $176.00 B. $144.00 C. $14.40 D. $305.60
Find the sum.
A. 41.23 B. 44.83 C. 286.3 D. 241.47
Use the graph of f to determine the intervals where f is increasing and where f is decreasing.
A. increasing: [5, ?); decreasing (-?, 5] B. increasing: (-?, ?); decreasing: never C. increasing: (-?, 5]; decreasing [5, ?) D. increasing: (-?, 0]; decreasing [0, ?)
Complete the square to write the equation in the form 
+ 
= 1 or 
+ 
= 1.Determine the center, foci, and vertices of the ellipse.25x2 + y2 - 200x + 375 = 0
A. 
+ (y - 4)2 = 1
center: (4, 0); foci: (4, 2
), (4, -2
); vertices:(4, 5), (4, -5)
B. (x - 5)2 + 
= 1
center: (5, 0); foci: (5, 
), (5, -
); vertices:(5, 4), (5, -4)
C. 
+ (y - 5)2 = 1
center: (5, 0); foci: (5, 
), (5, -2
); vertices:(5, 4),
(5, -4)
D. (x - 4)2 + 
= 1
center: (4, 0); foci: (4, 2
), (4, -2
); vertices:(4, 5), (4, -5)