Consider a share of equity in the Aphrodite Conglomerate. In two years, it is expected to be worth $$85.$ It is expected to pay dividends of $$4$ this year, and $$5$ next year. Determine the current value of the equity if:

a$.$ Market rates are $5\%.$

b$.$ Market rates are $8\%.$

c$.$ Market rates are $3\%.$