$1-$The stock price for a Stock was $$10$ per share $1$ year ago. The stock is currently trading at $$9\mathrm{.}50$ per share and shareholders just received a $$1$ dividend. What return was earned over the past year?

$2-$Nico bought $100$ shares of Cisco Systems stock for $$30\mathrm{.}00$ per share on January $1,2021.$ He received a dividend of $$2\mathrm{.}00$ per share at the end of $2021,$ and at that time the stock was selling for $$34.$ What return did Nico earn in $2021$ on the stock?

$3-$Suppose that a one$-$year, risk$-$free, zero$-$coupon bond with a $$100,000$ face value has an initial price of $$96,618\mathrm{.}36.$ The cash flows would be

$4-$The U$.$S$.$ Treasury has just issued a five$-$year, $$1000$ bond with a $5\%$ coupon rate and semiannual coupons. What cash flows will you receive if you hold this bond until maturity?