Hazlett Electronics makes televisions and radios. The company can make a total of eight items per 18-hour workday. A television takes 3.5 hours to make, and a radio takes 1.5 hours to make. What is the number of radios made by the company each day?

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)