Suppose that ​$4,000 is invested in a 6​-month CD with an APY of 1.6

What is the corresponding​ APR?

(1+ .016/2)² - 1=0.016064=1.6064%

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To find the corresponding Annual Percentage Rate (APR) from the given Annual Percentage Yield (APY), we can use the following formula:

APR = (1 + APY/n)^n - 1

Where:
APY: Annual Percentage Yield
APR: Annual Percentage Rate
n: Number of compounding periods in a year

In this case, we need to find the APR for a 6-month CD with an APY of 1.6.

First, let's determine the number of compounding periods in a year. Since the CD has a 6-month term, there are two compounding periods in a year (since there are 12 months in a year and the CD compounds every 6 months).

n = 2

Next, substitute the given values into the formula:

APR = (1 + 0.016/2)^2 - 1

Simplifying this expression:

APR = (1 + 0.008)^2 - 1
APR = (1.008)^2 - 1
APR = 1.016064 - 1
APR = 0.016064

Therefore, the corresponding APR for a 6-month CD with an APY of 1.6 is approximately 0.0161 or 1.61%.