Solve the problem.Decide whether or not the points are the vertices of a parallelogram.(-12, -10), (-10, 0), (3, 7), (1, -3)
A. No
B. Yes
Answer: B
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Find the inverse of the matrix by using a graphing calculator.
A. 
B. 
C. 
D. 
Find the critical point(s) of the function. Then use the second derivative test to classify the nature of each point, if possible. Finally, determine the relative extrema of the function.
?
?
A. 
; saddle point: 
B. 
; relative maximum value: 
C. 
; relative minimum value: 
Find the weighted mean of the numbers in the table. Round to the nearest tenth.Five rats were inoculated against a disease. After an incubation period, the number of rats contracting the disease was noted. The experiment was repeated 20 times, with the results shown in the table. 
A. 2.4 rats B. 2.7 rats C. 2.3 rats D. 3.1 rats
Evaluate.C(12, 12)
A. 479,001,600 B. 12 C. 239,500,800 D. 1