A loan company charges $30 interest for a one month loan of $500. Find the annual interest they are charging

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

3x = 729 solve for x plz . it's urgent. will mark

What makes a trapezoid an isosceles trapezoid?