How do i put 371.8 into scientific notation

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Which function has the domain x> -11?

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?