The position of a particle moving to the right on the x-axis is given by x(t), where x(t) is measured in inches and t is measure
d in minutes for 0≤t≤100. If y=x(t) is a linear function, which of the following would most likely give the best estimate of the speed of the particle, in inches per minute, at time t=20 minutes? A. x(20)x(20)
B. x(20)20x(20)20
C. x(21)−x(19)x(21)−x(19)
Well I don't remember the equation with all the numbrical stuff but if you times 5 and 5 than times 4 and 5 which is 25 and 20 take 20 away from 25 and you have your answer hope it helps