A bouncy ball is dropped such that the height of its first bounce is 3 feet and each successive bounce is 77% of the previous bounce's height. What would be the height of the 5th bounce of the ball? Round to the nearest tenth (if necessary).

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?