Ryan has a piece of wood that is 5 5/12 feet long . he use 3 1/4 feet of the word for a project how much wood does Ryan have left?​

What is (28 + 7 + 6 + 3) x 1/2 show your work

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.

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?