Simplify.
A. 
B. 
C. 
D. 
Answer: A
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Simplify the algebraic expression by combining like terms.9y + 8 - 3y + 1
A. 15y B. 6y + 7 C. 6y + 9 D. 12y + 9
Solve the system of equations.
A. x = z + 2, and y = z - 2, where z is any real number or {(x, y, z) |x = z + 2, and y = z - 2, where z is any real number} B. x = 2 - z, and y = z + 2, where z is any real number or {(x, y, z) |x = 2 - z, and y = z + 2, where z is any real number} C. x = z + 2, and y = 2 - z, where z is any real number or {(x, y, z) |x = z + 2, and y = 2 - z, where z is any real number} D. inconsistent
Illustrate the set on a number line.{x| x > 0}
A. 
B. 
C. 
D. 
Solve the problem.A meter is a unit of measure in the metric system that is approximately equal to 39.37 inches. Gina is 2 meters tall. What is her approximate height in inches? (Round to the nearest hundredth.)
A. 7.87 in. B. 78.74 in. C. 78.94 in. D. 789.40 in.