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 2 years ago
You can buy DVDs at a local store fro $15.49 each. You can buy them at an online sore for $13.99 each plus $6 for shipping. How many DVDs can you buy for the same amount at the two stores?
 2 years ago
You can buy DVDs at a local store fro $15.49 each. You can buy them at an online sore for $13.99 each plus $6 for shipping. How many DVDs can you buy for the same amount at the two stores?

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tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2for this problem you need to create two equations; one that represents the amount of money it would cost to buy a certain amount of movies from the store, and another that shows the money it costs to buy a certain amount of movies online.

WhiteRabbit
 2 years ago
Best ResponseYou've already chosen the best response.0d = 15.49 and o = 13.99 + 6?

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2what you need in those equations is a variable to represent the number of movies

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2because if I buy 2 movies from the store it will be 2 * $15.49

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2so lets let x = the number of movies I want to buy and y is the amount of money it costs

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2if I buy from the store I multiply the number of movies I want to buy times the price of each movie right?

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2that works too. m for movies and c for cash?

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2so the way we can represent the price of movies at the local store is with 15.49m = c

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2now we can make another equation that shows the price of buying movies online. Can you make that one?

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2so now the problem asks us how many movies we can buy with the same amount of money at the two stores or for what value of m will both of our equations result in the same number c

WhiteRabbit
 2 years ago
Best ResponseYou've already chosen the best response.0hmm can we combine them?

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2and since 13.99m + 6 = c and 15.49m = c we can set these equations equal to each other because we're assuming c is the same number in both

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2its like saying 2+2 = 4 and 1 +3 =4 so we can say that 1 + 3 = 2 + 2

WhiteRabbit
 2 years ago
Best ResponseYou've already chosen the best response.0oh ota, so 15.49m = 13.99m + 6

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2can you solve from here?

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2let me know what you get

tjones89
 2 years ago
Best ResponseYou've already chosen the best response.2the question didnt ask for that, but yeah good job!

WhiteRabbit
 2 years ago
Best ResponseYou've already chosen the best response.0it bothers me if i don't solve for all variables ... sorry
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