Solve the system of equations.3x + 5y + z = 404x - 4y - z = -75x + y + 4z = 37
A. (5, 4, 3)
B. (4, 5, 3)
C. (3, 5, 4)
D. (4, 3, 5)
Answer: B
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Fill in the blank with one of the words or phrases listed below. Not all choices will be used.
The 
of the rational function f(x) = 
is {x|x is a real number, x ? 3}.
A. domain B. denominator C. complex fraction D. numerator
Find the exact value of the trigonometric expression without the use of a calculator.If sin ? = 
, 
< ? < ? and cos ? = 
, 0 < ? < 
, find the exact value of sin (? - ?).
A. 
B. 
C. 
D. - 
Solve the problem.There are 13 essay questions on a test. Students must select 3 questions to write essays on. In how many ways can the 3 questions be chosen?
A. 293 B. 284 C. 286 D. 1716
Use interval notation to describe the set of numbers.John is at least 26 years old.
A. [26, ?) B. (-? , 26] C. [26, 55] D. (26, ?)