Hi : ) what is the value of b in the given quadratic regression equation? y= -0.139x^2 + 1.667x a. 1 b. 1.667 c. 0 d. -0.139

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.