solve for the unknown variables $($identified with a $?)$ based on the information provided.

$\backslash$table$[[,$Interest Amount,Principal or Present Value,Interest Rate,Time$],[1.,?,$$$130,000\mathrm{.}00,8\%,9$ months$],[2.,$$$4,000\mathrm{.}00,?,2\%$ per month,$8$ months$],[3.,$$$1,437\mathrm{.}50,$$$57,500\mathrm{.}00,$per year,$4$ months$],[4.,$$$103\mathrm{.}13,$$$1,250\mathrm{.}00,9\%,?$ months$],[5.,?,$$$42,250\mathrm{.}00,\frac{11}{2}\%$ per month,$\frac{1}{2}$ year$],[6.,$$$1,350\mathrm{.}00,?,\frac{63}{4}\%,3$ months$]]$