Identify the situation that each graph could represent Time
A. the distance you are from home if you walk to your friend's house, stay there for five minutes, and then walk to school
B. the volume of water in a pool that is being drained at a rate of 50 gallons per minute
C. the height of a ball bounced on the ground
D. the amount of charge left in a cell phone if it is fully charged, then used for a while, turned off for a while, and then used some more

Given the graph below state whether or not the relation is a function, and give the domain and range.

If a • b*2 = 1.8 x 10*-7, and c•b/d = 7.2 x 10*-4, find the value of a•d*2/c*2

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)