Final answer:
After the first quarter, Malika will have earned $16.10 in interest on the CD that has an APR of 2.8% and is compounded quarterly.
Step-by-step explanation:
Malika will have earned $16.10 in interest after the first quarter. To calculate the quarterly interest, we use the formula for compound interest, but since she is paid the interest each quarter, it becomes a simple interest calculation for the first quarter. The formula to calculate interest for one quarter is:
I = P × r × t
Where I is the interest earned, P is the principal amount, r is the quarterly interest rate, and t is the time in quarters. For the calculation:
P = $2300
r = 2.8% per year or 0.028 per year which is divided by 4 to get the quarterly rate: 0.028/4 = 0.007 per quarter
t = 1 quarter
Now, calculating the interest:
I = $2300 × 0.007 × 1 = $16.10