Answer: 
Step-by-step explanation:
For this exercise you need to remember the following formula:

Where "V" is the speed, "d" is the distance and "t" is time.
In this case, according to the information given in the exercise, you know that:
- James leaves his school at 3:15 and arrives at the park at 3:25. Then, you can identify that the time it takes him to go from his school to the park is:

- The park is 0.5 miles from James' school. Therefore, you can identify that "d" is:

So, knowing those values, you can substitute them into the formula:

Finally, evaluating, you get the following result:

Answer:
Factor
Step-by-step explanation:
Sum = Answer of an addition problem
Variable =
or 
The factor should answer the question
B. 90/360, because this is 1/4 from circle. It's even shown in the picture.
Example: If you take a protractor at 180°, then if you mirror it, then 360° will comeout, i.e. a circle.