Hassan made a purchase at the
convenience store for $22.19,
including sales tax. He gave the
clerk $40. How much change
should Hassan receive?

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)

Percent increase and decrease. original number: 45 new number: 18

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.