Plz asap will give a how is combining two discounts different than applying the discounts separately?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 2x + 3y is less than negative 3 over 2 times x minus 4part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points)part b: is the point (â’4, 6) included in the solution area for the system? justify your answer mathematically. (4 points)

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?