For the given demand function, find the value(s) of x for which total revenue is a maximum.x = D(x) = 
A. 500
B. 
C. 250
D. 1000
Answer: B
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Simplify. Write your answer in the form a + bi, where a and b are real numbers.(-5 - 5i) - (6 - i)
A. -11 - 5i B. 11 + 4i C. -11 - 4i D. -11 + 4i
A stockbroker has $243,000 to invest in stocks and bonds. She wants to invest at least $112,000 in stocks and at least $45,000 in bonds. If stocks have an annual yield of 10% and bonds have an annual yield of 5%, how much should she invest in each to maximize her return? Find the maximum return. ?
A. no money in stocks and $243,000 in bonds: $1,215,000 B. $112,000 in stocks and $198,000 in bonds: $21,100 C. $198,000 in stocks and $45,000 in bonds: $22,050 D. $112,000 in stocks and $45,000 in bonds: $1,345,000 E. none of these
Write the partial fraction decomposition of the rational expression.
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Simplify the expression by combining like terms.6y2 + 11y2
A. 17y4
B. 17y2
C. 
y2
D. 17y