Multiply. write your answer as a fraction in simplest form: 4 x 5/14

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

What is not true about kl and mn? what is mn? (show your work)

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 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)