allieboney allieboney

03-02-2017
Mathematics

contestada

Your purchase of CDs and DVDs has a total of 7 items. CDs cost9 each and DVDs cost 15 each. The total purchase costs 87 write and solve a system of equations to find x of CDs and y or DVDs that you purchased.

Respuesta :

03-02-2017

9c + 15d = 87
I don't know how to use the equation to answer it, but 4 DVDs were bought, and 3 CDs were bought.

Answer Link

Otras preguntas

Describe the transformation f(x) = √x + 1 − 5 in words. The parent function f(x) = √x has been shifted 1 unit and 5 units.

A beverage company advertises a new iced drink that contains a catalyst that aids in digestion. What can be inferred based on their claim? A. The drink contai

As a result of riots and a new treaty, Panama was given full control of: the Panama Canal the Caribbean Central America

10 TIME REMAINING 09:53:23 Into what genre do both Edgar Allan Poe’s “The Philosophy of Composition” and Stephen King’s On Writing fall? fiction nonfiction d

Pollution from a factory that produces cleaning products is a(n) _____. tariff antitrust law externality

Stella is renting a car for a business trip. The agency charges a flat rate of $60 plus $0.50 per mile every mile she drives over 40 miles. Stella's company wil

What distinguishes a heart attack from heart failure. A. A heart attack results from poor blood flow, while heart failure involves a total interruption of bloo

Simplify (5x^3-x+14)-(3x^2-9x+4)

Help me plz Answer ???

You want to lay tile in a room of your house. The room is 12 feet by 8 feet. What is the side measure of the largest square tile that you can use to cover the w