Simplify.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Fill in the blank with the appropriate symbol, ? or ? .6.3 
{x|x is a rational number smaller than 6}
A. ? B. ?
Mathematics
Use a graphing calculator to approximate all real solutions of the equation.y = x4 + 6x3 + 7x2 - 6x - 8
A. -4, -2, 1, 1 B. -1, 1, 2, 4 C. -2, -1, 1, 4 D. -4, -2, -1, 1
Mathematics
Write a signed number for the statement.21° above zero
A. -21 B. 21
Mathematics
Solve by the substitution method.-7x + 25 = 9y-3x - 3y = -9
A. {(x, y)|-7x + 25 = 9y} B. {(1, 2)} C. {(0, 3)} D. ?
Mathematics