Explain why rates are usually written as unit rates.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Maria solved an equation as shown below. what is the solution to maria’s equation?

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat