Jack is going to drive from his house to City A without stopping. An equation that determines Jack's distance from City A tt hours after leaving his house is D=220-55t. D=220−55t. What is the yy-intercept of the equation and what is its interpretation in the context of the problem?

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?