Translate to an equation, then solve.Negative three times the sum of x and eight is equal to x minus the difference of x and twenty-one.
A. -3(x + 8) = x - (21 - x), x = 3
B. -3(x + 8) = x - (x - 21), x = -1
C. -3(x + 8) = x - (x - 21), x = -15
D. -3(x + 8) = x - (21 - x), x = -1
Answer: C
Mathematics
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A. 
+ C
B. 
+ C
C. 
+ C
D. 
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= 6x2 + 5x - 2. Find f(x).
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B. 2x3 + 
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D. 2x3 + 2x2 - 2x - 9
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A. 
?
B. 
?2
C. 
?2
D. 
?
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