Find the value of the expression using the given values.
?x = 9, y = 12
A. 14
B. 11
C. 8
D. 15
Answer: D
Mathematics
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Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.25 B. -1 C. 0.5 D. 0.44
Mathematics
Subtract.
A. 480 B. 620 C. 388 D. 488
Mathematics
Solve by the quadratic formula. Simplify answers. Use i notation for nonreal complex numbers.3x2 - 4x - 7 = 0
A. x =
, -1
B. x = 
, 1
C. x = 
, -1
D. x = 
, 1
Mathematics
Find the LCD for the given rational expressions.
, 
A. 100x5y3 B. 100x2y3 C. 2000x5y3 D. 100x3y2
Mathematics