Which scenario is most likely the one shown on the graph? the total amount of money in the cash register, y, containing $50 in change and small bills and x $100 bills the total number of puzzle pieces, y, in a brand new 50- piece puzzle, and x brand-new 100-piece puzzles the total weight of the barbell, y, where the bar weighs 50 pounds and x 100-pound weights are added to it the total number of calories, y, in a salad with vegetables containing 50 calories topped with x ounces of salad dressing at 100 calories per ounce