Use an equation to solve the problem.Sales tax on a $13 compact disc is $0.91. At what rate is sales tax computed?
A. 5%
B. 7%
C. 2%
D. 6%
E. 8%
Answer: B
Mathematics
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Prove that the equation is an identity.
= 
What will be an ideal response?
Mathematics
Solve the problem.The mean and median salaries for U.S. workers are $28,000 and $43,000, respectively. State whether you think the distribution of salaries is normal, rectangular, skewed left, or skewed right. Explain your answer.
What will be an ideal response?
Mathematics
Solve the system of equations.x2 - y2 = 25x + y = 5
A. (-5, 0), (0, 5) B. (5, 0) C. (5, 0), (-5, 0) D. (-5, 0), (5, 5)
Mathematics
Draw a complete graph so that it has the given type of symmetry.Symmetric with respect to the x-axis
A. 
B. 
C. 
D. 
Mathematics