Which number can be added to a rational number to explain that the sum of rational number and a irrational number is irrational? a) π b) -8 7/8 c) 16 d) 81

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.