Solve the system.4x + 2y - 3z = 52x + 4y + z = 376x + 2y - 2z = 16
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Construct a phase line. Identify signs of y' and y".y' = 
, y > 0
A.
| ? |
B.
C.
 ? |
D.
Mathematics
Divide numerator and denominator by the highest power of x in the denominator to find the limit.
A. ?
B. 
C. 0
D. 
Mathematics
Write the expression using only positive exponents. Simplify if possible.
A. 
B. 
C. 
D. x2y6
Mathematics
Solve the problem.The percent of people who say they plan to stay in the same job position until they retire has decreased over recent years, as shown in the table below.
Find a power function that models the data in the table using an input equal to the number of years from 2000. According to the unrounded model, what percent of people will plan to stay in the same job position until retirement in 2014?
A. 18% B. 22% C. 24% D. 19%
Mathematics