Posted by **Anonymous** on Wednesday, September 26, 2007 at 12:55am.

5. Solve: log 5 (8r-7) = log 5 (r^2 + 5):

A. r = 2 or r = 6

B. r = -2 or r = 6

C. r = -2 or r = -6

D. r = 3 or r = 4

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