Avending machine accepts nickels, dimes, and quarters. exact change is needed to make a purchase. how many ways can a person with 4 nickels, 3 dimes, and 2 quarters make a 55-cent purchase from the machine?

What is the missing step in this proof ?

Explain why the factor 1.5 is broke. into two numbers in the model.

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?