Provide an appropriate response.If
f(x) = 1,
f(x) = -1, and f(x) is an even function, which of the following statements are true? I. 
f(x) = -1 II. 
f(x) = -1 III. 
f(x) does not exist.
A. II and III only
B. I and II only
C. I, II, and III
D. I and III only
Answer: D
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Integrate the function f over the given region.f(x, y) = xy over the triangular region with vertices (0, 0), (6, 0), and (0, 2)
A. 3
B. 6
C. 1
D. 
Use the quadratic formula to solve the equation. (All solutions are real numbers.)
= 
+ 
A. 
B. 
C. 
D. {-1}
Draw a graph of the rose curve.r = -3 sin 5?, 0 ? ? ? 2?
A. 
[-4, 4] by [-4, 4]
B. 
[-4, 4] by [-4, 4]
C. 
[-4, 4] by [-4, 4]
D. 
[-4, 4] by [-4, 4]
Solve the problem.The bar graph below shows a company's yearly profits from 1991 to 1999. Let an represent the company's profit, in millions, in year n, where n=1 corresponds to 1991, n = 2 corresponds to 1992, and so on. 
Find 
A. $122.3 million B. $457.7 million C. $438.3 million D. $400.7 million