Problem 1-42 (LO 1-4) Havel and Petra are married and will file a joint tax return. Havel has W-2 Income of $38,588, and Petra has W-2 Income of $49,381. Use the appropriate Tax Tables and Tax Rate Schedules. Required: a. What is their tax liability using the Tax Tables? b. What is their tax liability using the Tax Rate Schedule? Note: Round your intermediate computations and final answer to 2 decimal places. a. Tax liability using Tax Tables b. Tax liability using Tax Rate Schedule