Janet’s car insurance payment decreases by $20 each year. which expressions represent the total change in her payment, in dollars, after 5 years a. 20-20-20-20-20 b. 100 c. 5•(-20) d. -20•(-5) e. -100 pls answer my

100 points, hi, i’m not sure how to get the equation from the graph and table.

Sketch one cycle if the cosine function y=2cos2theta

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)