30 over 240 simplified

Mary had at least an 80% on her test write an inequality to represent this situation

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.

Find the area of an equilateral triangle with a side of 6 inches