Determine whether the given ordered pair is a solution to the given equation.(19, 23); y = 
A. yes
B. no
Answer: B
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Provide an appropriate response.What is wrong with the following?y = 
= 
= 
What is the correct derivative?
What will be an ideal response?
Find the indicated quantity.a4, when a41 = 
, a14 = 
A. 3
B. 
C. 
D. 6
Find the solution set of the equation. If the equation has no solution write ? and if the equation is an identity so state.
= - 
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. 39.6%; $209 million B. 37.5%; $210 million C. 34.9%; $207 million D. 35.8%; $209 million