Write an explicit formula for a
n
a
n
​
, the
n
th
n
th
term of the sequence
100
,
20
,
4
,
.
.
.
100,20,4

What is the slope of the line that contains the points (-2,1) and (0,-3)

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

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?