$1.($Number$)$ In a multi$-$period finance model, the minimum cost portfolio has a cost of

$$143$m$.$ We then notice that we need $$2$m extra $4$ years down the road. We resolve

the problem and the minimum cost portfolio turns out to be $$144\mathrm{.}75$m$.$ What is the

implied annual compound interest rate in percentages?

$2.($Number$)$ In the previous problem, what is the implied quarterly compound interest

rate in percentages?