Express in terms of sums and differences of logarithms.log 
A. (log x)7 + log z - (log y)3
B. 7 log x ? log z - 3 log y
C. log (7x + z) - 3 log y
D. 7 log x + log z - 3 log y
Answer: D
Mathematics
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B. 
C. 
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