Question

amee buys 7 DVDs for $129.50. The total cost, c, is proportional to the number of DVDs purchased, d.

What equation represents the situation? What is the cost of 2 DVDs?

Answer 1

Answer:

get it down to a unit rate firstt by dividing the 129.5 by 7 dvds

$18.50

18.5x2=37

the 2 dvds were 37 dollars

Step-by-step explanation:

Answer 2

The basic operation that is used in finding the cost of n number of products is multiplication, if we know the cost of 1 article then we can find the cost of n numbers of articles by multiplying it with the cost of one article. Therefore, the cost price of 2 DVD's is $37.

Amee buys 7 DVDS for $129.50.

Thus,

The cost price of 7 DVDs is $129.50

We need to find the cost price of 2 DVDs.

First let us find the cost price of 1 DVD.

Therefore,

$7 \;\rm{DVD's}= \ 129.50\\1 \; \rm{DVD}=\frac{129.50}{7}\\1 \; \rm{DVD}=\ 18.5$

Therefore, the cost price of 2 DVDs is $37.

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