Mirabelle makes a salary of $2,000 per month with a 25% commission on her sales. She has decided to save 5% of her salary and 10% of her commission earnings every month for retirement. Which of the following equations gives the monthly amount, S(x), that she deposits into her retirement account as a function of x, her total monthly sales?

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?

Find two numbers if their ratio is 4: 7 and their difference is 123.

Me because i don't understand how to do it.: )