If log72 = m, then log4928 is equal to Pick.
A) 2(1 + 2m)
B) (1 + 2m)/2
C) 2/(1 + 2m)
D) 1 + m
E) 1 + 2m
log4928 = 1/2log7(7x4) = 1/2(1 + log74)   = 1/2 + (1/2). 2log72   = 1/2 + log72   = 1/2 + m = (1 + 2m)/2.   ANSWER:(1 + 2m)/2
<result>B</result>
If log72 = m, then log4928 is equal to