Provide an appropriate response.Suppose that you are solving a system of three linear equations and have evaluated D, Dx, Dy, and Dz. Under what condition does Cramer's rule not apply?
A. Dx = 0, Dy = 0, or Dz = 0
B. Dx = 0
C. D = 0
D. D = 0; and either Dx = 0, Dy = 0, or Dz = 0
Answer: C
Mathematics
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A. -3 B. 3 C. 9, 3 D. 3, -3
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A. 2
B. -18
C. 
D. 18
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Use the table to solve the problem.The cost in dollars of driving a certain make and model of car for x miles is given by the function f. A numerical representation of f is given in the following table. 
Use the table to evaluate f for x = 3.
A. $1.76 B. $1.32 C. $2.64 D. $0.44
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Answer the question.In how many ways can you answer the questions on an exam that consists of 10 multiple choice questions, each of which has 3 answer choices?
A. 59,889 B. 1000 C. 59,049 D. 58,819
Mathematics