Every time that she stopped, the value of the speed is 0, the speed limit is the maximum represented in the graph and when she travels at this speed for a while the graph is a horizontal line.
So she starts at 0, then increases her speed until a limit then she drives at this speed for a while which is represented by a horizontal line. then, she has to slow to a stop, which means she goes back to 0, later increases her speed until the limit, drives a while until she finds a stop sign, represented by a horizontal line, and then goes to 0.
In conclusion, the graph that represents the journy is the fourth graph.
Answers are A and E, this is because you can do 3:12 x 4 = 12:48 and 3:12/4 = 1:4 therefore they are all equal values
Answer:
Both trains are traveling at 90 miles per hour.
Step-by-step explanation:
We are told that the rate is the same for both trains, and we know that the distance traveled by train a plus the distance traveled by train b equals 585 miles.
We will use 
formula to solve this problem.
Train A: 
(Using 2.5 instead of 2 and 1/2)
Train B: 
We can set an equation to solve for rate R of trains as:
Therefore, rate of both train a and train b is 90 miles per hour.
A rational number is a number that has a decimal place that does end:
1/2 = 0.5
√5 = 2.23606...
A real number is a number with a decimal place, so...
1/2 fits both categories
Hope this helps! :)
