What fraction of one gallon is one quart

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

17 in long 1.3 ft wide and 8in high what is the volume