Answer:
8
Step-by-step explanation:
The function u given me is

The period of a function is represented by

where b is the coefficient of the x variable.
The coefficient is pi/4 so

8 is the answer.
Answer:
2 miles per hour
Step-by-step explanation:
She miles 1/2 mile every 15 minutes or 1/4 hours so
1/2*4=2 miles per hour
Solution:
x/3-2/5 = 2x/15-3/5
(x/3)/15 - (2/5)/15 = (2x/15)/15 - (3/5)/15
5x - 6 = 2x - 9
5x = 2x - 9 + 6
5x - 2x = -9 + 6
3x = -3
3x/3 = -3/3
x = -1
Therefore the value of x is -1
Answer: I Included a picture below.
Hope this helps, if you have any questions please leave a comment. :)