Charlie runs at a speed of 3 yards per second. about how many miles per hour does charlie run?

What is the size of the matrix resulting from

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?

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]