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Hatshy [7]
3 years ago
12

A DVD store charges $4.70 for each day, a DVD is rented. The store also gives you a dollar off if the DVD is returned before 5 d

ays. a.Write a rule to represent the rental charges. b. How much will you pay if you return the DVD after 4 days? 7 days?
Mathematics
1 answer:
torisob [31]3 years ago
6 0

Answer:

For four days it would be $19.8. For seven days it would be $24.9

Step-by-step explanation:

4 days:

$4.70 x 4 + 1= 19.8

7 days:

$4.70 x 7 = $24.9

I took away 1 from the 4 day equation because the question said you get a dollar off if you return the dvd before 5 days.

Hope this helps!

~Starr



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Answer:

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Step-by-step explanation:

Average: The sum of all the numbers divided by the number of numbers

If the ratio of the scores is 5 : 4 : 3, let's just set it as 5x : 4x : 3x

Then using the definition of an average, we can write this equation.

(5x + 4x + 3x) / 3 = 68

Multiply both sides by 3.

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Simplify.

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Just in case, let's check this answer. Find the average of the 3 test scores.

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Thus, the answers are correct

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3 years ago
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Step-by-step explanation:

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