Answer :
The glide reflection that concerts the pre-image of the points:
A = (3, 11)
B = (3, 4)
C = (10, 4)
to the right 2 units is given by adding to the x coordinate 2 units. These points then become:
A' = (3 + 2, 11) = (5, 11)
B' = (3 + 2 , 4) = (5, 4)
C' = (10 + 2, 4) = (12, 4)