Texaschic nailed it when saying that it's arithmetic
The recursive way to write this is to say


which tells us "start at 6 and each time subtract off 5"
The

portion is the nth term while

is the term just before the nth term
Answer:
Simplify 2x - 4) + 7(x + 2).
9x + 6
9x - 4
09x - 6
= 9x+10
If you have a graphing calculator, you can type 37.25/100 then that would equal 0.3725. Then you press the MATH button and select frac. This will give you 149/400