What is the value of y in the solution to the system of equations? 1/2 x + 2 y = 1
2x - 3y = -30
O -8
0 -3
O 3
08
hel

Multiplying an even number of negative numbers gives an answer that is choose from:

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.

How can constraints be used to model a real-world situation?