In triangle \( \Delta JRW \), the sum of all the angles is \( 180° \). Given that \( m∠J = 47° \) and \( m∠W = 15° \), we can find \( m∠R \) as follows:
\[ m∠R = 180° - m∠J - m∠W \]
Substituting the known values:
\[ m∠R = 180° - 47° - 15° \] \[ m∠R = 180° - 62° \] \[ m∠R = 118° \]
Thus, the measure of angle \( R \) is \( m∠R = 118° \).
The correct response is:
m∠R=118°