What variable did the researchers intentionally vary in the experiment, and what are the units for this variable? concentration of liver cells

To which set of numbers does the number –5 belong? select all that apply. integers natural numbers rational numbers real numbers whole numbers

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

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?