21/3,2.3,23.5%,25/9 from greatest to least

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

Can someone me do math because i am having a breakdown rn because i don’t get it

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?