answer each question

2.1 A Preview of Calculus OPEN ITEMS INFO LEARNING RESOURCES CONCEPT REVIEW 17. Help me with this * 1 The displacement (in meters) of a particle moving in a straight line is given by s = 12 - 9t + 16, where t is measured in seconds. (A) (i) Find the average velocity over the time interval [3,4]. Average Velocity = meters per second. (ii) Find the average velocity over the time interval [3.5,4]. Average Velocity = meters per second. (iii) Find the average velocity over the time interval [4.5]. Average Velocity = meters per second. (iv) Find the average velocity over the time interval [4.4.5]. Average Velocity = meters per second. (B) Find the instantaneous velocity when t = 4. Instantaneous velocity = meters per second