Graph the function.Use the graph of f(x) = 3x to obtain the graph of g(x) = 3-x.
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.Find the center of mass of the hemisphere 
if the density is proportional to the distance from the center.
A. 
B. 
C. 
D. 
The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 0 for r(t) = t2i + (4t3 - 3)j + 
k
A. a(0) = 2i - 
k
B. a(0) = 2i + 
k
C. a(0) = 2i - 
k
D. a(0) = 2i - 
k
Choose the most reasonable measurement for the situation described.Since the Chin's are buying new furniture, they measured the length of their bedroom wall. Choose the most reasonable measurement.
A. 4.8 km B. 4.8 m C. 4.8 cm D. 4.8 mm
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. 28.8%; $272 million B. 30.9%; $382 million C. 27.0%; $379 million D. 38.4%; $383 million