Question

the initial term of arithmetic sequence is 5. The eleventh term is 125. what is the common difference of the arithmetic sequence? help meee

Answer 1

An arithmetic sequence starts with one number and you add the common difference to the previous term to get the current term
So...
f(x)=mx+b
m=common difference
b=starting point
f(11)=125=11m+b
-
f(1)=5=1m+b
--------
120=10m
Divide both sides by 10
12=m
Your common difference is 12.