Alan is a software salesman. His base salary is $1600, and he makes an additional $40 for every copy of Math is Fun he sells. Let P represent his total pay (in dollars), and let N represent the number of copies of Math is Fun he sells. Write an equation relating P to N. Then use this equation to find his total pay if he sells 21 copies of Math is Fun. Equation: D=0 Total pay if Alan sells 21 coples: $] Х 5 ?

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?