Answer:
Step-by-step explanation:
For an nth term in an arithmetic sequence
U(n) = a + ( n - 1)d
where n is the number of terms
a is the first term
d is the common difference
From the above sequence
a = 22
d = 18 - 22 = 4
We are finding the 15th term so
n = 15
U(15) = 22 + (15-1)-4
= 22 + 14(-4)
= 22 - 56
The final answer is
Hope this helps you.
