Answer:
0.3%, $51.67
Step-by-step explanation:
The interest rate per month is 3.6%/12 = 0.3%. In the first month, Ester puts the initial $50 into the account. So, the interest for that $50 will be compounded for only 11 of the 12 months. So the initial $50 will be worth 50(1.003)11, or $51.67, at the end of 12 months.