Which of these transformations would produce an image that is not congruent to its pre-image?

a. a translation of ( x-2, y + 9)
b. a translation followed by a rotation
c. a rotation of 270 degrees about the origin
d. a dilation followed by a translation

Will mark brainliest for correct answer! i have been on this problem for an hour and can't find the answer. i'm begging here! incase you cant read the instructions in the picture because of too much or too little lighting: note: enter your answer and show all the steps that you use to solve this problem in the space provided. write a list of steps that are needed to find the measure of b. provide all steps as clear as possible, !

Aresearch study is done to find the average age of all u. s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample

Five infinity stones cost $16.80. what is the price per infinity stone ?