Find the greatest common factor of the monomials.-8x6 and 12x4
A. -12x2
B. 4x6
C. 4x4
D. -8x4
Answer: C
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 0 B. -12 C. 1 D. -4
Write the numeral as an Egyptian numeral.2000
A. 
B. 
C. 
D. 
Solve the problem.Which of the graphs described below must be a tree?
A. The students at Tasmania State University are the vertices; edges represent whether two students have had a class together or not. B. An ancestry graph: Sets of parents are the vertices; birthparents are joined to their single-child offspring by edges. C. A roadmap illustrating all of the towns and roads connecting them in Madison county. D. all of these graphs must be trees. E. none of these graphs must be trees.
Solve the problem.Erin earns a weekly salary of $520 and is nonexempt from FLSA. Last week she worked 51 hours. What are her gross earnings for the week?
A. $773.50 B. $791.00 C. $734.50 D. $678.00