Answer:
Option B, 2 f(x-5) is correct
Step-by-step explanation:
Stretch f vertically by a factor of 2, can be represented as 2f (x) which makes the Option C and D as incorrect. Either option A or B has to be correct.
Shift right to 5 units represents 2 f(x-5) where "- " indicates right direction and "+" indicates left direction. Of tthe given options, option B is correct.
