Give y=3x-5/x+6 Calculate y' and check the sign

How do you multiply a mixed fraction by a regular fraction

Which statement about perfect cubes is true

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.