After setting up your Treasury Direct account, you buy a US Goverment Treasury Bill (T-bill) for $4,980.56 which matures to $5,000.00 in 6 months. What rate does this earn? a) You would earn a rate of % (round to the nearest hundredth of a percent). You pay $30 federal tax on the interest earned. What is the actual simple interest rate you earn after federal tax? b) The actual simple interest rate after federal tax is % (round to the nearest hundredth of a percent)