Trying to find the APR or Stated Rate
Stated Rate (APR) Number of Times Compounded Effective Rate (EAR)
The relationship between APR and EAR is
EAR = (1+APR/a)^a -1
Where a is the compounding frequency
1. Semiannual - the compounding frequency is 2 since it is two times a year
12.2% = ...
The solution explains how to determine the APR given the effective annual rate (EAR)