Solve the following system of equations. -3x + 5y = 80 x + 5y = 40 a. x = -10, y = 10 b. x = 2, y = 17.2 c. x = 8, y = 6.4 d. x = 10, y = -10

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?

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same