To feed his plants, logan creates a mixture that requires 3/8 cup of plant food for every gallon of water. if he uses 10 1/2 gallons of water, what is the total amount of plant food he needs?

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?