The U$.$S$.$ government borrows money by selling Treasury bills. Treasury bills are discounted notes issued by the U$.$S$.$ government. On June $4,2003,$ Kris Greenhalgh purchased a $155-$day, $$4500$ U$.$S$.$ Treasury bill at a $4\mathrm{.}34\%$ discount. On the date of maturity Kris received $$4500.$ Complete parts a$)$ through d$).$

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