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MatroZZZ [7]
3 years ago
8

An online retailer is selling used books for ​$6.49​, and you have ​$50 to spend. How many books can you buy if you must pay 6.5

​% sales tax and an additional​ 10% of the total purchase price​ (with tax) for​ shipping?
[] ​book(s)?
Mathematics
1 answer:
elena55 [62]3 years ago
4 0
× all of the number that it tell you to do
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Elza [17]

Answer:

(8, 20)

Step-by-step explanation:

Let's input each values of the ordered pair given as options to see which one satisfy the equation y = 16 + 0.5x

==>Option 1: (0, 18)

18 = 16 + 0.5(0)

18 = 16 + 0

18 ≠ 0

Option 1 is incorrect.

==>Option 2: (5, 19.5)

19.5 = 16 + 0.5(5)

19.5 = 16 + 2.5

19.5 ≠ 18.5

Incorrect.

==>Option 3: (8, 20)

20 = 16 + 0.5(8)

20 = 16 + 4

20 = 20

CORRECT

==>Option 4: (10, 21.5)

21.5 = 16 + 0.5(10)

21.5 = 16 + 5

21.5 ≠ 21

Incorrect.

The answer is (8, 20)

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podryga [215]
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What number was the numerator and denomiator of 3/5
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6

Step-by-step explanation:

When you do 3×6 you get 18 and when you do 5×6 you get 30

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