Jaden invested $300 into a savings account at Simple Bank. He earns 8% interest. How much will he have in his account, if he does not deposit anymore, and leaves it in the account for 5 years?

For a short time after a wave is created by wind , the height of the wave can be modeled using y= a sin 2pi(t) / t where a is the amplitude and t is the period of the wave in seconds. how many times over the first 5 seconds does the graph predict the wave to be 2 feet high?