Is 17 heartbeats in 15 seconds equivalent to 68 heartbeats in 60 seconds

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

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, !

Check image and write the letter of the answer