Brett is correct because, in a positive numberline 3 would be greater then 2 1/2, but in a negative numberline the answers are different because higher numbers in the negatives are less than lower numbers like -2 1/2 so -3 is less than 2 1/2. Therefore Brett is correct.
Ming needs to play for 15 hours to get 500 points. They gave him 200 for signing up, so 500-200=300 more points needed. 300 divided by 20= 15 more hours.
