Bill is able to save $35/week after working part-time and paying his expenses. These two formulas show his weekly savings:
A. f(1) = 35, f(n) = f(1) + f(n-1) for n 1
B. f(n) = 35n
I. Which one of these formulas show the sequence written recursively, and which shows it written explicitly? Justify your explanations.

Question

Bill is able to save $35/week after working part-time and paying his expenses. These two formulas show his weekly savings:
A.	f(1) = 35, f(n) = f(1) + f(n-1) for n > 1
B.	f(n) = 35n
I.	Which one of these formulas show the sequence written recursively, and which shows it written explicitly? Justify your explanations.

anonymous · Answer

i know b is explicit and a is recursive, but how do I justify my explanations?

anonymous · Answer

@JFraser @aaronq @Broskishelleh

jfraser · Answer

i don't know this kind of math, sorry

anonymous · Answer

Its ok. I figured it out.

anonymous · Answer

@JFraser