$(1$ point$)($Exercise $1\mathrm{.}28)$ Find the accumulated value of $$200$ at the end of $2$ years:

a$)$ If the nominal annual rate of interest is $7\%$ compound $4$ times a year.

Answer $=$$

b$)$ If the nominal annual rate of discount is $7\%$ convertible once every $4$ years.

Answer $=$$