Which expression represents the difference quotient of the function f (x) = -sqrt 2x? (attached picture question and answer)

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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)

Apackage of orgainc strwberries costs $1.50 while there in season and $2.25 when not in season what the percent increase