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puteri [66]
4 years ago
5

A phone service offers a data plan with a $25 monthly fee and charges $10 per gigabyte download.

Mathematics
2 answers:
bagirrra123 [75]4 years ago
7 0
25 + 10x < = 75 <== ur inequality
10x < = 75 - 25
10x < = 50
x < = 50/10
x < = 5 <== solution
mixer [17]4 years ago
6 0

The <em><u>correct answer</u></em> is:

At most 5.

Explanation:

The monthly fee is $25 and the charge for data is $10 per gigabyte.  This means that the total monthly charges will depend on the number of gigabytes; this makes the gigabytes the independent variable.  We use x to represent the independent variable.

Since data is $10 per gigabyte, and x is the number of gigabytes, this gives us 10x.  We add to that the monthly fee of $25, for 10x+25.

We want to know how much they can download and pay <em>at most</em> 75; this means less than or equal to, and gives us the inequality

10x+25 ≤ 75

To solve this, subtract 25 from each side:

10x+25-25 ≤ 75-25

10x ≤ 50

Divide both sides by 10:

10x/10 ≤ 50/10

x ≤ 5

The maximum number of gigabytes that can be downloaded for this cost is 5.

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A roll of film for this camera costs $4.79. There
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Answer:

The total cost is $16.96

The cost per photo is $1.06

Step-by-step explanation:

Hello!

<h3><u>Part 1:</u></h3>

1 roll of film costs $4.79. 1 roll of film has 16 photos. To develop the 16 photos, you need to pay $12.17.

First, let's find the total cost for the film and the development for 1 roll of film:

  • Total Cost = Cost of Film + Cost of developing
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  • Total Cost = $16.96

<u>The total cost of 16 photos is $16.96</u>

<u />

<h3><u>Part 2:</u></h3>

Now, we have to find the price per picture on the roll of film. We know that there are 16 shots on the film, so we can simply divide the total price by 16 to find the price per picture.

Divide:

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<u>The price per photo is $1.06</u>

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2 years ago
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Sladkaya [172]

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3 years ago
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3 0
3 years ago
Sunita creates a scale model of an aeroplane.
Varvara68 [4.7K]

Answer:

The wingspan of the real aero plane is 65.6 cm

Step-by-step explanation:

Here, we are to calculate what the wingspan of the real aero plane is given the length of the model and the comparison of the model to the real.

This can be best solved using a ratio approach.

What we have is that the model measures to the original at a ratio of 5:8

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Let the real

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Thus mathematically;

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