Lin and her brother each created a scale drawing of the backyard, but at different scales. Lin used a scale of 1 inch to 1 foot. Her brother used a scale of 1 inch to 1 yard. Express the scale for the drawings without units. Whose drawing is larger. Explain or show your reasoning

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

The solution set for 5v2 – 125 = 0 is

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.