Simplify the expression. [(-5)-7 (-5)813
| 1. Apply the product of powers: [(-5)'13
2. Apply the power of a power: (-5)3
3. Simplify:
What is the value of the expression?

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.