Question

What is the recursive formula of A(n)=2+9(n-1)
A. A(n)=A(n-1)+2
B. A(n)=A(n-1)+9
C. A(n)=A(n-1)-9
D. A(n)=A(n-1)-2

Answer 1

write out a few terms; it looks arithmetical

Answer 2

since we are tacking on the 9 times tables; id say its the +9 route

Answer 3

I was thinking that but , wasnt sure

Answer 4

a0=2
a1 = 2+9
a2 = (2+9)+9
a3 = (2+9+9)+9
a4 = (2+9+9+9)+9

hmm,

Answer 5

ok,thanks

Answer 6

youre welcome, and when in doubt, write it out. brute math is useful at times :)