The rock band, screamin’ meanies, has a fan club that publishes a monthly newsletter. expenses are $.35 for printing and mailing each copy, plus $770 total for research, writing and other costs. the price of the newsletter is $.55 per copy. how many copies of the newsletter must the club sell to break even each month? a. the club must sell 3500 copies to break even. b. the club must sell 630 copies to break even. c. the club must sell 423 copies to break even. d. the club must sell 3850 copies to break even.

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)