1a. (YEAR 2020) Suppose Sarah (Single) has earned a salary of 90,000. One transaction has shown a loss of $18,000 from a sale of a long-term capital asset, but she has no other income. How much is Sarah's AGI (adjusted gross income). 

1b. If Sarah earns a salary of $18,400 and a gain on a long term capital asset for $14,000. If she had no other income and elects to take the standard deduction, what would be her tax liability for 2020? 

1c. What if Instead: Sarah's salary is 58,000 for the year 2020. She also has received $7,000 in qualified dividends as well as an $18,000 gain from the sale of a long term capital asset. A $4000 gain from the sale of a short-term capital asset . Lastly, there is a long-term capital asset loss carryover of $10,000 from 2019. What is the total amount of income that qualifies for adjusted net capital gain tax rates?