On a deposit of $100 at a simple interest rate of 20%, how many years would it take to double your money? hint: how much interest do you earn in one year? what about the next year? how many years to earn $100 in interest?

Which graph represents the equation y =4x

In the geometric progression –3, 12, −48… what term is 3,072?

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?