The lifetime of a certain brand of tires is approximately normal with a mean of 48,000 miles and a standard deviation of 4,000 miles. The mileage that the company should set its warranty at so that fewer than 5% of the tires must be replaced under warranty is closest to:

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, !