Determine the equation of the inverse of y=4^2x+9

A: y=2*log4x-9

B: y = (log4x-9) / 2

C: y = ((log4x) / 2) - 9

D: y=4*log2x-9

3/4 divided by 2/3 equals

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Lower quartile of 6 8 10 12 14 15 15 20