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nadya68 [22]
3 years ago
10

Urgent help... looks easy... just can't get it :(0.

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
4 0
Answer: Choice D

-------------------------------------

Work Shown:

|2x - 6| < 4
-4 < 2x - 6 < 4
-4 + 6 < 2x - 6 + 6 < 4 + 6
2 < 2x < 10
2/2 < 2x/2 < 10/2
1 < x < 5

Plot open circles at x = 1 and x = 5 on the same number line
The shading will be in between the two open circles

That is why the answer is choice D

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Question:

Diners frequently add a​ 15% tip when charging a meal to a credit card. What is the price of the meal without the tip if the amount charged is ​$20.70? How much was the​ tip?

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Step-by-step explanation:

Let the price of the meal be <em>y</em>;

Let the tip be <em>t</em>

<em></em>

<em>From the question;</em>

15% of <em>y </em>is the tip charge (<em>t</em>). i.e

t = 15%y

=> t = 0.15y          --------(i)

<em>The total amount charged is $20.70  (This means that the sum of the price of the meal and the tip is $20.70)</em>

=> y + t = 20.70            [substitute the value of t=0.15y from equation (i)]

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t = 0.15(18)

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