Need step by step on how to do this.

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.

Select the number of ways in which a line and a circle can intersect

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.