Perform the indicated operation and simplify the result.
+ 
A. 
B. 
C. 
D. 
Answer: A
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Rationalize the denominator.
A. -1 - 
B. -1 + 
C. 1 + 
D. 1 - 
If a woman making $37,000 a year receives a cost-of-living increase of 2.2%, how much is her raise?$__________
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A company knows that the unit cost C and the unit revenue R from the production and sale of x units are related by 
Find the rate of change of unit revenue when the unit cost is changing by 
and the unit revenue is $4000.
A. $373.20/unit B. $557.90/unit C. $260.00/unit D. $188.50/unit
Solve the problem.A rectangular playground is to be fenced off and divided in two by another fence parallel to one side of the playground. 528 feet of fencing is used. Find the dimensions of the playground that maximize the total enclosed area.
A. 132 ft by 132 ft B. 88 ft by 132 ft C. 44 ft by 198 ft D. 66 ft by 132 ft