Find the domain of the function.f(x) = 
A. {x|x ? -8}, or (-?, -8) ? (-8, ?)
B. {x|x ? 2}, or (-?, 2) ? (2, ?)
C. {x|x ? -8 and x ? 2}, or (-?, -8) ? (-8, 2) ? (2, ?)
D. all real numbers, or (-?, ?)
Answer: C
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The total weekly revenue (in dollars) of the company realized in manufacturing and selling its rolltop desks is given by
?
?
where x denotes the number of finished units and y denotes the number of unfinished units manufactured and sold each week. The total weekly cost attributable to the manufacture of these desks is given by
?
?
dollars. Determine how many finished units and how many unfinished units the company should manufacture each week in order to maximize its profit. What is the maximum profit(P) realizable?
?
x = __________
?
y = __________
?
P = $__________
What will be an ideal response?
Solve the problem.A $94,000 trust is to be invested in bonds paying 7%, CDs paying 5%, and mortgages paying 9%. The bond and CD investment must equal the mortgage investment. To earn a $7140 annual income from the investments, how much should the bank invest in bonds?
A. $28,000 B. $47,000 C. $19,000 D. $26,000
Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
+ 
D. 
+ 
+ 
Use the table to answer the question. Write the number in words. 
Which type of housing is most used?
A. owning a house; twenty billion, six hundred fifty-two million, eight hundred fifty-three B. renting a house; five million, one hundred fifty-three thousand, three hundred fifty-four C. owning a condo; seven thousand, three hundred seventy-nine million, two hundred eleven D. owning a house; twenty million, six hundred fifty-two thousand, eight hundred fifty-three