Which is equivalent to 2 to the 3rd power * 2 to the -5th power?

a)
2 to the -15th power

b)
2 to the -8th power

c)
2 to the -2nd power

d)
2 to the 2nd power

Look at attachment. has all info needed. need

Hi, can anyone show me how to do this problem? 100 points for this. in advance

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, !