10:49 AM Tue Oct 27 97% learn-us-east-1-prod-fleet01-xythos.s3.amazonaws.com 6. The income tax rate is 25%. For singles, the first $20,000 of income is excluded from taxation. For married couples, the exclusion is $40,000. Harry earns $0. Sally earns $100,000 a. If Harry and Sally are living together unmarried, what is their combined tax bill? b. If Harry and Sally are married, what is their tax bill? 7. Omar received a total of $2,000 in gifts for his high school graduation. He plans to save the entire amount to take a trip to South America after he graduates in college in 4 years. He has estimated that he will need $3,000 for this trip. a. If the current interest rate is 4.5%, will he have enough money saved to pay for his trip in 4 years? b. If the current interest rate is 8.5%, will he have enough money saved to pay for his trip in 4 years? C. If the current interest rate is 8.5% and he waits 5 years to take the trip, will he have enough money saved to pay for his trip