Using the equation below create a model to slove 4+d=11

What is the solution of the systems of equations? y=2/3x+3 x=-2

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.

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b