Select the correct answer from the drop-down menu. The manager of the customer service department of an e-commerce company wants to know the average hold time for customers who call the
department. The department receives about 850 calls each hour. The following data set shows the hold time, in minutes, for 10 calls picked at
random.
2, 1, 4, 5, 3, 3, 7, 4, 3, 2
Calculate the approximate hold time for all customers who call the customer service department.
The approximate hold time for all customers who call the customer service department

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)