16. Use a calculator to find a value for ln16.1 to four decimal places.

a. 2.7788
b. –2.7788
c. –1.2068
d. 5.0814
e. 1.2068

again, only one possible choice, since

e^1 = 2.718
e^2 = 7.389
e^3 > 16

To find the value of ln16.1 to four decimal places using a calculator, you need to follow these steps:

1. Turn on your calculator and make sure it is set to the natural logarithm (ln) function.

2. Enter the number 16.1 into the calculator.

3. Press the equals (=) button to calculate the natural logarithm of 16.1.

4. Read the result on the calculator's display.

The correct answer among the given options is:

c. –1.2068

So, using a calculator, you would get ln16.1 as -1.2068.