How would i find the sum of the infinite series: 1/3+2/9+4/

Can someone me out here number 4 plz

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

The four students in the table below each recorded the time and distance traveled while exercising. exercising distance (miles) time (minutes) gia 2 30 harris 5 50 ian 3 40 jackson 4 80 which list ranks the students from fastest walker to slowest walker? jackson, gia, ian, harris harris, jackson, ian, gia harris, ian, gia, jackson jackson, harris, ian, gia