The first thing you do is go two space forward like start at the o and move two spaces forward you put a decimal at 9 like this 0.90 and that's how you do it
Her average score for the 3 turns is 40 because you have to add all of the scores so -80 and -120 is -200 so add that to 320 and you get 120 divide that by 3 because she took 3 turns and you get 40