The world population in 2013 was about 7.125 billion. In 2003, it was about 6.357 billion. Which number represents the increase in the world population between 2003 and 2013? A. 0.0768 × 107 B. 0.768 × 108 C. 7.68 × 109 D. 7.68 × 108

I’m stuck on this equation, anyone got the answer?

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?

Select all the expressions that will include a remainder.