The 15th term of the arithmetic sequence 
Option B is correct
The nth term of an arithmetic sequence is given as:

The first value, a = 22

Since 

The common difference, d = 3

The 15th term of the arithmetic sequence = 64
Learn more here: brainly.com/question/24072079
Answer:
3.14 (or pi ) feet
Step-by-step explanation:
Entire circle circumference = pi *d = 8 pi feet
45 degrees is a fraction of the entire 360 degrees of the circle
45 / 360 * 8 pi = pi = 3.14 ft
Find a common denominator
the common denominator of 7 and 3 is 21
2/21 - 3/21
change the numerator
14/21 - 9/21 =5/21