Identify the property that allows you to conclude that the triangles are congruent. Or, if such a conclusion cannot be made, answer "None."
A. None
B. AAS
C. ASA
D. SAS
Answer: C
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Use Gauss-Jordan elimination to solve the linear system and determine whether the system has a unique solution, no solution, or infinitely many solutions. If the system has infinitely many solutions, describe the solution as an ordered triple involving variable z. x + y + z = 92x - 3y + 4z = 7
A. 
B. no solution
C. 
D. 
Differentiate.
Simplify.
2
A. 
B. 
C. 
D. 
Solve the problem.Economists use what is called a Leffer curve to predict the government revenue for tax rates from 0% to 100%. Economists agree that the end points of the curve generate 0 revenue, but disagree on the tax rate that produces the maximum revenue. Suppose an economist produces this rational function 
where R is revenue in millions at a tax rate of x percent. Use a graphing calculator to graph the function. What tax rate produces the maximum revenue? What is the maximum revenue?
A. 34.0%; $271 million B. 36.6%; $268 million C. 35.8%; $276 million D. 41.2%; $264 million