Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = 4, y = -3, z = -5, w = 2; (4, -3, -5, 2)
B. x = - 
, y = 
, z = 
, w = - 
; 
C. x = 
, y = - 
, z = - 
, w = 
; 
D. x = -4, y = 3, z = 5, w = -2; (-4, 3, 5, -2)
Answer: D
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Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - 7x
A. 
; 
2
B. 49; 
2
C. 0; 
2
D. 
; 
2
Simplify.3 ? 8 + 7(7 + 5) + 8
A. 86 B. 116 C. 164 D. 548
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, when 
, 
, 
and 
. Round to the nearest whole number.
?
?
__________
Fill in the blank(s) with the appropriate word(s).
Graph the function with a graphing utility and use it to predict the limit. Check your work either by using the table feature of the graphing utility or by finding the limit algebraically.
?
?
A. 18
B. 4
C. 
D. 0
E. does not exist