Nico joven presently earns $348.40 per week. he claims himself and his mother as allowances. he is single. he is to get a new job classification, which will result in a 15% increase in pay. he also plans to marry. after his marriage, he will claim his wife, himself, and his mother as allowances. how much less will be withheld weekly for federal income tax? (include steps, along with answer ).