Plsss help Solve the problem below.
Madison invested in a certificate of deposit for 4 years at a 6%
interest rate. At the end of the 4 years, the value of the
certificate of deposit was$3,100. How much did Madison
deposit originally?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

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?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.