Sagot :
Pattern: –8n + 38
Solution:
an = a1+(n-1)d
an = 30 +(n– 1)(–8)
an = 30 – 8n + 8
an = –8n + 38
Checking by using the pattern -8n+38
1st term:
–8(1) + 38
–8+38
= 30
2nd term
-8n + 38
–8(2)+38
–16 + 38
= 22
3rd term:
-8n+38
-8(3)+38
-24 + 38
= 14