Mackenzie spent $20 at the local farmer’s market. she bought b pounds of blueberries that cost $4 per pound, and r pounds of raspberries that cost $6 per pound. she wrote the equation 4b + 6r = 20 to represent the cost of all the fruit. which is equivalent to mackenzie’s equation?

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?