Campbell, a single taxpayer, earns $400,000 in taxable income and $2,000 in interest from an investment in State of New York bonds. (Use the U.S. tax rate schedule). Required: a. If Campbell earns an additional $15,000 of taxable income, what is her margigal tax rate on this income? b. What is her marginal rate if, instead, she had $15,000 of additional deductions (For all requirements, do not round intermediate calculations.) Answer is complete but not entirely correct. Marginal tax rate 29 b. Marginal tax rate 28.83 2019 Tax Rate Schedules Individuals Schedule X-Single Schedule Z-Head of Houselhold If taxable Income If taxable income Is But not over: The tax Is: The tax Is: But not over: Is over: over: S 9.700 10% of taxable income 10% of taxable income S 13.850 S1,385 plus 12% of S 52.550 $ 39.475 S 13,850 5970 plus 12% of 9.700 the excess over $9,700 the excess over S13,550 S 84.200 S6.065 plus 22% of S 39,475 S 52,850 S $4,200 S4,543 plus 22% of the excess over the excess over S52,850 S39,475 S 84,200 S12.962 plus 24% of S14.382 50 plus 24% S84.200 S160.725 S160,700 of the excesS over the excess over S4.200 S$4.200 of S31,322 plus 32 S160.725 S32,748.50 plus 32% S160,700 S204, 100 S204, 100 of the excess over the excess over S160,700 S160.725 S45,210 plus 35% of $204,100 S510.300 $46,628.50 plus 35% S204. 100 $510,300 of the excesS over the excess over $204, 100 $204.100 S510.300 $152.380 plus 37% of S153,793.50 plus 37% S510,300 of the excess over the excess over S510,300 $510,300 Y2Moreled Fllng Senarately Schedule V.L.Marrled Elllng Jolnls.or Oualifydug Sehedule