Solve for x: the quantity x plus fifty all over two equals thirteen times x

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

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.

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?