Assume that the Social Security tax rate is 6% and the Social Security maximum is $140,000 per year. A) What is the effective tax rate on someone with a $70,000 salary? B) What is the effective tax rate on someone with a $140,000 salary? C) What is the effective tax rate on someone with a $1,400,000 salary? 3) The sales tax is said to have a "flat tax rate". What does that mean? 4) Provide at least three examples of an excise tax.