Please help with the following

Which ahows the graph of the solution set of 6x+4y< 12

What statement is true? 2x^2-9x+2=-1

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.