Form the union for the following sets. e = {1, 2, 3} f = {101, 102, 103, 104} e ∪ f ={1, 2, 3, 101, 102, 103, 104} {1, 2, 3} {101} { }

The deepest part of the swimming pool is 12 feet deep.the shallowest part of the pool is 3 feet deep.what is the ratio of the deeply of the deepest part of the pool to depth of the shallowest part of a pool?