Can you show me how to do this FRQ?

A particle moves along the x-axis so that its position at time t > 0 is given by a (t) = -9 (a) Show that the velocity of the particle at time t is given by v(t) =- 70t (3t'48) Please respond on separate paper, following directions from your teacher. Please respond on separate paper, following directions from your teacher. (c) The acceleration of the particle is given by a (t). Write an expression for a (t), and find the value of a (2). Please respond on separate paper, following directions from your teacher. (d) What position does the particle approach as t approaches infinity? Please respond on separate paper, following directions from your teacher