Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.3(x + 7)
A. 3x + 10
B. 3x + 21
C. x + 21
D. 3x + 7
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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Write the number in scientific notation.7543
A. 7.543 x 10-3 B. 7.543 x 103 C. 7.543 x 101 D. 7.543 x 104
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Write the mixed number as an improper fraction.5
A. 
B. 
C. 
D. 
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Graph the function.y = cos 
x
A. 
B. 
C. 
D. 
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