Solve the system of equations using Cramer's rule.x - y + z = -11x + y + z = -3x + y - z = 1
A. (-2, -5, 4)
B. (-5, 4, -2)
C. (4, -2, -5)
D. (-5, -2, 4)
Answer: B
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Consider a function 
. If the graph of 
is below the horizontal axis, what can be said about the graph of f?
?
A. The graph of f is above the horizontal axis. B. The graph of f is below the horizontal axis. C. The graph of f is decreasing. D. The graph of f is a straight line.
Complete the following for the given f(x). (i) Find f(x + h). (ii) Find the difference quotient of f and simplify.f(x) = 6x2 + 9x - 9
A. (i) 6x2 + 6xh + 6h2 + 9x + 9h - 9 (ii) 6x + 6 + 12h B. (i) 6x2 + 12xh + 6h2 + 9x + 9h - 9 (ii) 12x + 6h + 9 C. (i) 6x2 + 12xh + 6h2 + 9x + 9h - 9 (ii) 12xh + 9h + 6h2 D. (i) 6x2 + 12xh + 6h2 + 9x - 9 (ii) 12x + 9
Find the distance between the points on a number line.-3, 1
A. -2 B. 2 C. 4 D. -4
Given the polynomial function f(x), find the rational zeros, then the other zeros (that is, solve the equation 
), and factor f(x) into linear factors.f(x) = x3 - 48x - 128
A. -4, multiplicity 2; 8; f(x) = 
(x - 8)
B. -4, multiplicity 2; -8; f(x) = 
(x + 8)
C. -8, -4, 4; f(x) = (x + 8)(x + 4)(x - 4)
D. -4, 4, 8; f(x) = (x + 4)(x - 4)(x - 8)