4:3 19:11 equivalent ratios?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

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?