In Class Activity Ch3: Financial Planning Exercises 1. Calculating marginal tax rates. Lacey Hansen is single and received the following items and amounts of income during 2018, as shown below. Determine the marginal tax rate applicable to each item. Note that if the item is not taxable, the marginal rate is 0. 1. Total Gross income is: Show all your work. 2. Taxable income is Show all your work. 3. Total tax-exempt income: Show all your work