You've decided to take
3
33 steps and randomly choose left or right as the direction each time.
Which of these tree diagrams can be used to find the probability of taking any possible combination of
2
22 lefts and
1
11 right?

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?