D. Not enough info
Angles N and P are supplementary (125º + 55º = 180º) but this doesn't tell us anything about the measures of angles M and Q. The edge MQ of the quadrilateral is not guaranteed to be parallel to NP.
For example, we can move vertex M anywhere along MN and still preserve the measures of angles N and P.
The expression is equivalent to r^(m-n)
The ratio would be 4:1.
Try to reduce the ratio further with the greatest common factor (GCF).
The GCF of 64 and 16 is 16
Divide both terms by the GCF, 16:
64 ÷ 16 = 4
16 ÷ 16 = 1
The ratio 64 : 16 can be reduced to lowest terms by dividing both terms by the GCF = 16 :
64 : 16 = 4 : 1
Therefore:
64 : 16 = 4 : 1