Let S3={I, 1, 2, 3, 4, 5} Then S3 is an non-Abelian group under composition because ab DNE ba yet A3 is a normal subgroup of S3 which is commutative and contains permutations of even order you can also take mappings of this group G onto G' may be an isomorphism perhaps
9h + 15 < 100 This basically says that the total money is less than 100 because her hourly rate times how many hours she worked would be added to her tips for that day.