The owner of an audio store received a shipment of portable stereos at a cost of $102.30 each. if he sells the stereos for $181.99 each, what is the percent of markup?

What is the smallest integer n such that n\sqrt{2} is greater than 20

Combine like terms to make a simpler expression 3z+z

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =