Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.
A. (-2, 5, -3)
B. no solution
C. (5, -3, -2)
D. (-2, -3, 5)
Answer: C
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Decide whether the graph of the equation opens up, down, to the left, or to the right; and whether it is wider, narrower, or the same shape as the graph of 
(or 
).x = 
y2 + 2y - 1
A. To the right; narrower B. To the left; wider C. To the right; wider D. To the left; narrower
Factor f(x) into linear factors given that k is a zero of f(x).f(x) = 3x3 + (5 - 3i)x2 + (-11 - 8i)x + 3 + 3i; k = 1 + i
A. (x - (1 + i))(x - 3)(3x + 1) B. (x - (1 + i))(x + 3)(3x - 1) C. (x + (1 + i))(x - 3)(3x + 1) D. (x - (1 + i))(x + 2)(3x - 1)
Fill in the blank with one of the words or phrases listed below. Some words or phrases may be used more than once.
A(n) 
function is a function that can be defined by f(x) = logbx, where x is a positive real number, b is a constant positive real number, and b is not 1.
A. inverse B. exponential C. symmetric D. logarithmic
Advertising Suppose that a survey of 100 advertisers in U.S. News, These Times, and World found the following.
21 advertised in all three
24 advertised in These Times and U.S. News
57 advertised in World and U.S. News
23 advertised in World and These Times
51 advertised in These Times
64 advertised in U.S. News
65 advertised in World
Which is the correct Venn diagram representing this information?
 figure 1.png)
 figure 2.png)