Is (4, 10) a solution of 5x + 10y = 120? Explain how you know. How could you check using the equation? Using the graph?

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.

Select the graph of the solution. click until the correct graph appears. |x| = 3

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17