Write the phrase as a mathematical expression. Use x to represent the number. Combine like terms if possible.A number multiplied by 4, added to -8, subtracted from 8 times the sum of 2 times the number 
A. 4(-8 + x) + 8(2x + 9); 20x - 23
B. 4x - 8 + 8(2 + 9x); 76x + 20
C. 4(-8 + x) + 8(2 + 9x); 13x - 16
D. 8(2x + 9) - [4x + (-8)]; 12x + 80
Answer: D
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ds, C is the curve r(t) = (-9 - t)i - j + (-9 - t) k, 0 ? t ? 1
A. 
B. 
C. 
D. 
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A. 
B. 1
C. 
D. 5
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What will be an ideal response?
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A. z7/6 B. z1/7 C. z-1/7 D. z6/7