What is the discriminant of f(x)=-3x^2-2x-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.

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?

What expression is equivalent to (84+16)