Which equation is equivalent to this formula?

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

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)

Laura read 1/8 of a comic book in 2 days. she reads the same number of pages every day. what part of the book does she read in a week