Problem:
Show your work (Show the formula, the values of the variables in the formula, and the result of the formula). Final answers should be rounded to the nearest cent (two decimal places). Beware of rounding intermediate results.
1. A resident of the United States has a base income of $23,000 after adjustments for deductions. New legislation by Congress would tax this income at a rate of 11 percent. What tax would be due?
2. Find the simple interest on $8537 at 10% per annum for 8 months.
3. Find the simple exact interest on $24,281 at 12 3/4% (per annum) from June 8 of one year to February 14 of the next year.
4. Find the effective rate corresponding to 3% compounded quarterly.