1430 to the nearest hundredth

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

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.