Grade 12 Calculus. Only use grade 12 knowledge and don't use derivative rules when solving

Question 5 (24 points) Application 7) The position, in metres, of a particle moving in a straight line is given by the equation s (x) = 30 5+ + 10, where t is measured in seconds [9 marks] a) Determine the average velocity (average rate of change of position) of the particle over the time interval 1 s + $ 5 seconds b) Determine the instantaneous velocity of the particle when t=3 seconds c) What does the rate of change (velocity) imply about the relationship between position and time of the particle