Perform the indicated operation.(6r4 + 5r2 - 4r ) - (-3r3 + 7r2 - 4r - 6)
A. 7r4 + 4r3 + 12r2 + 6
B. 6r4 + 3r3 - 2r2 + 6
C. 10r7 + 12r3
D. 6r4 - 3r3 + 12r2 - 6
Answer: B
Mathematics
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B. x8z5
C. x7z4
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÷ 
A. 
B. 
C. 12x2
D. 
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The graph of a function f is given. Use the graph to answer the question.For what values of x is f(x) < 0?
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Mathematics