Simplify the following by combining like terms.3.8x3 - 6.5x + 11.7 + 1.5x - x3 - 8.3
A. 2.8x3 - 5x + 3.4
B. 1.2x4
C. 3.8x3 + 8x + 20
D. cannot be simplified
Answer: A
Mathematics
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B. 
C. ?
D. 
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Simplify.90 ÷ (6 ÷ 3)
A. 5 B. 88 C. 45 D. 15
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Reduce the rational expression to lowest terms.
A. - 
B. 
C. 
D. 
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The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct.
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A. 
B. ?
C. ?
D. ?
E. ?
Mathematics