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.
Answer:
k= 9
Step-by-step explanation:
hope this helps you
Answer:
I'm not that sure but I really feel like it's 15
Well, I Don't See The Answer Choices, But The Next Step Is Most Likely To Subtract 8 From Both Sides.