Solve 3(2x-5)-4x+8=-1

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Factor this polynomial completely x^2-64

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.