What is the volume of a sphere with a surface area of 16 pi ft2

The triangles are similar. what is the value of x? show your work.

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?

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.