Solve the pair of linear equations by addition.
If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.
A. 
B. 
C. 
D. The lines are parallel.
E. The lines coincide.
Answer: B
Mathematics
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Identify which of three conceptual models of division (repeated subtraction, partition, missing-factor) best corresponds to the problem.A wealthy patron dies and leaves her entire estate of 12 million dollars to 4 charities. If each charity receives the same amount, how much does each receive?
A. Repeated subtraction B. Partition C. Missing-factor
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Determine if the graph represents a function.
A. Yes B. No
Mathematics
Find the exact value for x in the interval 
that satisfies the equation. tan (x) = 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables are positive.
A. - 
B. x3/2y17/8
C. 
D. 
Mathematics