Identify the property or rule shown by each equation

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Which fraction represents the ratio 35 : 42 in simplest form

From a party ,lori made a fruit punch from 1 gallon of orange juice ,2 quarts of grape juice,5 pints of pineapple juice,and 12 cups of cranbarry juice order the juice from least to greatest amount used in the fruit punch