NEED HELP ASAP. This list describes the motion of a car:

accelerates from a stop and settles at the speed limit

-gradually slows down for traffic

-stops at a red light

Which graph would show the car's speed over time?

Graph of Speed : where rule highway in major towns is now max 20,ph we can say the average speed is 12.

Step-by-step explanation:

average speed =  f 1

f= beginning speed + final speed   /2

average speed f2

f =  0 + 12   /2

step-by-step explanation: 4 cause 2+2=4

irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives

z = (80-78)/12 = 1/6 = .1667

now, find what percentile a z score of 1/6 correlates to in the normal distribution.

a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364

the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.

the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.