Question

The function shown below gives the position of a particle at time t. http://www.webassign.net/userimages/2.5.020.jpg?db=v4net&id=53223
a) At what labeled points is the acceleration of the particle negative? (Select all that apply.)
b) At what labeled points is the position of the particle increasing? (Select all that apply.)
c) At what labeled points is the velocity of the particle increasing? (Select all that apply.)