More on Linear Equations:Question 7 The graph shows the change in the volume of water in a
tank over time when a release valve is open. What is the
average rate of change?
у
250
225
200
175
150
Gallons
125
100
75
50
25
0
1 2 3 4 5 6 7 8 9 10
х
Minutes

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)