Find the first three terms of f(n + 1) = f(n) + 8, if f(1) = 27.

I hope this helps you

f (1+1)= f (1)+8

f (2)= 27+8

f (2)=35

f (2+1)= f (2)+8

f (3)= 35+8

f (3)=43

To determine what irrational number is closest to square root of 9, simply round each of the values in the options or estimate to the typical square root, and you can see that square root of 18 is 3 square root 2, so that is very close to square root 9.