Need helping with all parts of the question, part a,b and c. Thank you

David and Ruby are engaged and plan to get married. During 2017, David is a full-time student and earns $5,800 from a part-time job With this income, student loans, savings, and nontaxable scholarships, he is self-supporting. For the year, Ruby is employed and reports $74,600 in wages. The personal exemption amount for 2017 is $4,050 Click here to access the standard deduction table to use. Click here to access the Tax Rate Schedules. If an amount is zero, enter, "O".Do not round your intermediate computations. Round your final answer to nearest whole dollar a. Compute the following: Ruby Filing Single David Filing Single Gross income and AGI Standard deduction Personal exemption Taxable income Income tax b. Assume that David and Ruby get married in 2017 and file a joint return. What is their taxable income and income tax? Round your final answer to nearest whole dollar. Married Filing Jointly Gross income Standard deduction Personal exemptions Taxable income Income tax c. How much Federal income tax can David and Ruby save if they get married in 2017 and file a joint return