Question

If f(n)=f(n-1)+8 and f(1)=7, what is f(50)

Answer 1

`f(n)=f(n-1)+8=f(n-2)+2*8=f(n-3)+3*8=\cdots=f(1)+(n-1)*8`

Since
`f(1)=7`, you have


`f(50)=f(1)+(50-1)*8=399`