Perform the indicated operations and simplify.
- 
+ 
A. 
B. 
C. 
D. 
Answer: A
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Find the median for the given sample data.The number of vehicles passing through a bank drive-up line during each 15-minute period was recorded. The results are shown below. Find the median number of vehicles going through the line in a fifteen-minute period.
A. 30 B. 29.85 C. 31 D. 34
Solve by completing the square to obtain exact solutions.x2 = 7 - 8x
A. -4 ± 2
B. -1 ± 
C. 4 + 
D. -4 ± 
Solve the problem.Coffee is best enjoyed at a temperature of 125°F. A restaurant owner wants to discover the temperature T at which he should serve his coffee so that it will have cooled to this ideal temperature in 4 minutes. He discovers that a cup of coffee served at 195°F cools to 180°F in one minute when his restaurant is at 74°F. If he maintains the restaurant temperature at 74°F, at what temperature should he serve the coffee to meet his goal?
A. 195°F B. 181°F C. 161°F D. 156°F
Solve.2x - 7 = -17
A. -8 B. -12 C. -5 D. 1