I just need to know what do you do for $134 and $170. For example is it 50x+12=134 because when I did that it gave me 2.44 and I don’t think that’s the answer. But someone please I need help

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, !