Refer to the figure. given and , find the measure of the following angles.

angle 9

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)

The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?