Your answer will be 95 degrees. (3x+10)=(4x-15) ends up with x=25. Plug it in to (3x+10). You should get 85 degrees. Using the definition of supplementary angles, angle 3 will be 95. Angle 7 and angle 3 are corresponding angles.
-2/15.... Change in rise over run... (change in y over change in x)
8 quarts is the largest because it is 4 gallons.
22 pints would make 4.5 quarts which is 2.25 gallons.
30 cups would make 15 pints which would be 3.75 quarts.
You would set them equal to each other X= 13