Compute the required values under the following circumstances: $($Do not round intermediate calculations. Round the final answers

to $2$ decimal places.$)$

a$.D_1=$$$5\mathrm{.}60$;$P_{}=$$$72$;$g=9\%$;$F=$$$8\mathrm{.}00.$

b$.D_1=$$$0\mathrm{.}24$;$P_{}=$$$36$;$g=8\%$;$F=$$$3\mathrm{.}50.$

c$.E_1($earnings at the end of period one$)=$$$8$; payout ratio equals $15$ percent; $P_{}=$$$36$;$g=7\mathrm{.}0\%$;$F=$$$2\mathrm{.}6.$