$1.$ Explain what $it$ means for the yield curve $to$ invert.

$2.$ Using bond demand and supply model $(or$ loanable fund model$),$ explain what changes $in$ bond demand and supply, separately for both short$-$term and long$-$term bonds would result $inan$ inverted yield curve.

$3.To$ revert the inverted yield curve back $to$ normal shape, what bonds should the Fed buy and sell $to$ make the yield curve normal again?

$4.$ What bonds would a bond portfolio manager buy and sell $if$ they knew $in$ advance the yield curve will invert, $if$ their goal $isto$ make a profit.