Can someone help me write a two statement proof for this question?

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Which of the following is the correct ratio for converting kilograms to grams

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?