Waiting periods. Fill in the number of periods for the following table, $,$ using one of the three methods below:

a$.$ Use the waiting period formula, $n=\frac{ln(FVIPV)}{ln(1+r)}.$

b$.$ Use the TVM keys from a calculator.

c$.$ Use the TVM function in a spreadsheet.

Data table

$($Click on the following icon $$ in order to copy its contents into a spreadsheet.$)$

I need help solving the first row in the chart please. Can you add the step by step instructions so I can solve the rest of the problems too? I am not sure what the ln is in the equation. TIA!