$1)$ Wildlife adventures has earnings per share of $$2\mathrm{.}45$ & dividends per share of $$1\mathrm{.}05.$ The total book balue of equity of the firm is $$850,000.$ There are $40,000$ shares of stock outstanding. What is the sustainable rate of growth? $(\%)$

$2)$ if the effective annual rate of interest is known to be $18\%$ on a debt that has payments every two months, then the annual percentage rate is$?$

$3)$ if an investor purchases a $5\%,2$ year annual coupon TIPS at its par value of $$1,000$ & the CPI increases $3\%$ over each year of the next $2$ years, how many dollars in total will the investor recieve over the next two years? $($The CPI increase rate is the inflation rate$)$