Compare the graph of the given quadratic function f with the graph of y = x2.f(x) = - 
x2
A. Wider
B. Narrower
C. Reflected across the x-axis and wider
D. Reflected across the x-axis and narrower
Answer: C
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Solve the problem.A right circular cylinder is obtained by revolving the region enclosed by the line x = r, the x-axis, and the line 
about the y-axis. Find the volume of the cylinder.
A. ?rh2 B. ?r2h C. ?rh D. 2?r2h
Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given function.f(x) = x5 + x4 + x2 + x + 9
A. 0 positive zeros, 0 negative zeros B. 0 positive zeros, 2 or 0 negative zeros C. 0 positive zeros, 1 negative zero D. 0 positive zeros, 3 or 1 negative zeros
Change the word statement to an equation. Use x as the variable.50 divided by a number equals 
times that number."
A. 
= 
B. 
= 2x
C. 
= 
x
Solve the problem.Suppose the supply function of a certain item is given by 
and the demand function is given by 
Find the producers' surplus. (Hint: The equilibrium quantity q0 is a perfect cube.)
A. 
B. 32
C. 64
D. 