Build a variable expression for the given phrase.Two times the difference of two numbers.
A. 2(x - y)
B. 2x - y
C. 2(x ÷ y)
D. x - 2y
Answer: A
Mathematics
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Find an equation of the circle satisfying the given conditions.Center: (4, 6); passes through the point (7, 10)
A. (x - 4)2 + (y - 6)2 = 25 B. (x - 6)2 + (y - 4)2 = 9 C. (x + 4)2 + (y + 6)2 = 25 D. (x + 6)2 + (y + 4)2 = 9
Mathematics
Use = or ? for ? to write a true sentence.
? 
A. ? B. =
Mathematics
Simplify the radical expression. Assume that all variables represent positive real numbers.
A. 5 
B. 
C. 5
D. 5 
Mathematics
Solve the problem.The population of a city increased from 1,003,682 in 1995 to 1,356,831 in 2005. To the nearest tenth, what was the percent increase?
A. 2.6% B. 35.2% C. 26.0% D. 3.5%
Mathematics