Based on the given situation above about Patrick's savings, I can say that the best option for him in order to keep up with the increase 20 years after would be to utilize a compound interest account. The answer would be option B. Notice that with compound interest account, the amount he gets is around $31,000. Hope this helps.
Depending on the wage so im just gonna use an example to help you
so lets say the wage is $15 per hour
you would multiply 15 by 4 and thers your answer, please state the wage