Add or subtract, as indicated.(6w4 - 3wz + 5wz2) - (9w4 + 9wz - 7wz2)
A. -3w8 - 12w2z2 + 12w2z4
B. -3w4 - 12w2z2 + 12wz2
C. 15w4 + 12wz + 12wz2
D. -3w4 - 12wz + 12wz2
Answer: D
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Multiply.
? 
A. 
B. 
C. 1
D. 
Answer the question.If n is an odd number, then which of the following statements is true?
A. The equation xn - 1 = 0 has an odd number of nonreal roots. B. The equation xn - 1 = 0 has n - 1 roots. C. The equation xn - 1 = 0 has exactly one real root. D. The equation xn - 1 = 0 has an even number of real roots.
Graph the function.y = -cot (?x)
A. 
B. 
C. 
D. 
Provide an appropriate response.Which of the following is not an appropriate qualifying ratio?
A. debt-to-income ratio: fixed monthly expenses divided by the gross monthly income B. housing ratio: monthly housing expenses (PITI) divided by the gross monthly income C. loan-to-value ratio: the amount mortgaged divided by the appraised value of the property D. quick-income ratio: the amount of weekly pay divided by the gross monthly income