Perform the indicated operation. Simplify, if possible.
- 
A. 
B. - 
C. 
D. 
Answer: B
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Evaluate. If necessary, find common denominators and simplify completely.4
+ 12
A. 15
B. 16
C. 17
D. 4
Solve the system.7x - y = 7-14x +2y = -14
A. {(x, 14x - 7)} B. {(x, 7x - 7)} C. ? D. {(x, 7 - 7x)}
Solve the problem.An appliance store sells two types of refrigerators. Each Cool-It refrigerator sells for $640 and each Polar sells for $740. Up to 350 refrigerators can be stored in the warehouse and new refrigerators are delivered only once a month. It is known that customers will buy at least 60 Cool-Its and at least 100 Polars each month. How many of each brand should the store stock and sell each month to maximize revenues?
A. 60 Cool-Its and 290 Polars B. 310 Cool-Its and 195 Polars C. 250 Cool-Its and 100 Polars D. 75 Cool-Its and 275 Polars
Compute the product or state that it is undefined.
A. 
B. 
C. 
D. Undefined