Find a polynomial function f(n) such that f(1), f(2), , f(8) is the following sequence.
4, 12, 20, 28, 36, 44, 52, 60
f(n) =

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost