Final answer:
To calculate the interest earned in the first month, use the formula: Interest = Principal x APY / 12. Given a principal of $4,200 and an APY of 1.2%, the interest earned in the first month is $42.
Step-by-step explanation:
To calculate the interest earned in the first month, you can use the formula:
Interest = Principal x APY / 12
Given that the principal is $4,200 and the APY is 1.2%, we can substitute these values into the formula:
Interest = $4,200 x 1.2% / 12
Converting the percentage to decimal form:
Interest = $4,200 x 0.012 / 12
Calculating the interest:
Interest = $42
Therefore, the interest earned in the first month is $42.