2A. Suppose a stock pays $10 in dividends the first year, $15 the next year, $20 the third year and then goes bankrupt. If the discount rate is 1.5%, what is the value of this stock?

2B. Suppose a stock pays dividends of $10 a year for five years and then goes bankrupt. The discount rate is 1.5%. Compute using a function.

2C. Same as 2B, but use a formula.