Solve the inequality.
? 0
A. (-5, -1] or 
B. (-?, -5] or 
C. (-?, -1] or 
D. (-?, -5) or 
Answer: D
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Find the extreme values of the function subject to the given constraint.
A. Maximum: 36 at 
minimum: 0 at 
B. Maximum: 26 at 
minimum: -26 at 
C. Maximum: 26 at 
minimum: 0 at 
D. Maximum: 36 at 
minimum: -36 at 
Solve the problem using determinants.Linear systems occur in the design of roof trusses for new homes and buildings. The simplest type of roof truss is a triangle. The truss shown in the figure is used to frame roofs of small buildings. If a 128-pound force is applied at the peak of the truss, then the forces or weights W1 and W2 exerted parallel to each rafter of the truss are determined by the following linear system of equations. 
W1 + 
W2 = 256
-4.0px;" />W1 - 
W2 = 0Find W1 and W2.
A. W1 = 93.7 lb; W2= 114.76 lb
B. W1 = 114.76 lb; W2= 93.7 lb
C. W1 = 128 lb; W2= 156.77 lb
D. W1 = 46.85 lb; W2= 57.38 lb
Solve the system using substitution.
A. (-6, 24) B. (24, -6) C. all ordered pairs that solve 4x - 2y = 108 D. no solution
Determine whether the data represent direct variation, inverse variation, or neither.
A. Neither B. Inverse C. Direct