Answer: Choice D. (6,12)
Step-by-step explanation:
The translation
tells us to add 1 to the x coordinate and subtract 1 from the y coordinate.
For point R(1,5) we'll arrive at R'(2,4) after applying that translation or shifting mentioned. We have moved the point 1 unit to the right and 1 unit down.
Now apply the dilation with a scale factor of 3, centered at the origin. Basically it means we triple each coordinate. We'll go from R'(2,4) to R''(6,12)