Better Mousetraps has come out with an improved product, and the world is beating a path to its door.

As a result, the firm projects growth of $20\%$ per year for $4$ years. By then, other firms will have

copycat technology, competition will drive down profit margins, and the sustainable growth rate will

fall to $5\%.$ The most recent annual dividend was $$1$ per share. What is the stock price if the discount

rate is $10\%?($Hint: We need to first calculate the dividend next year to use in the non$-$constant

dividend discount model$)$

Answer: $P_0=$$$34\mathrm{.}74$

answer is above but need help with steps thank you!