State, in radians, the exact period of the function cot(1/3 x)

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out