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3 years ago

Summer had $24 to spend on seven pencils. After buying them she had $10. How much did each pencils cost?

Mathematics

2 answers:

amm18123 years ago

8 0

Answer:

Each pencil cost 2 dollars

Step-by-step explanation:

First you would subtract 10 from 24 to find out how much money she spent on the pencils in total

Then you divide the answer (14) by seven because that is how many pencils she bought when you divide it you should get 2 and that will be your answer

That is how much she spent on each pencil.

Fantom [35]3 years ago

7 0

We know Summer had $24 to start with. To find how much she spent, subtract.

24 - 10 = $14 (the amount she spent)

Now, divide to find how much each pencil cost.

14 / 7 = $2 per pencil.

Best of Luck!

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Hello there!

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$\displaystyle \large{ f(x) = | - 2x| - 3} \\$

To find the range, we know that domain is the set of all x-values and also called 'input' while range is the set of all y-values and also called 'output'.

Basic Function - you add the input, you get the output. You add x-value in a function, you get y-value. You add domain, you get range.

So, we substitute x = 1,2 and 3 in the function.

x = 1

$\displaystyle \large{ f(1) = | - 2(1)| - 3} \\ \displaystyle \large{ f(1) = | - 2| - 3} \\$

Recall that any numbers in absolute value are always positive.

$\displaystyle \large{ f(1) = 2 - 3} \\ \displaystyle \large{ f(1) = - 1} \\$

x = 2

$\displaystyle \large{ f(2) = | - 2(2)| - 3} \\ \displaystyle \large{ f(2) = | - 4 | - 3} \\ \displaystyle \large{ f(2) = 4 - 3} \\ \displaystyle \large{ f(2) = 1}$

x = 3

$\displaystyle \large{ f(3) = | - 2(3)| - 3} \\ \displaystyle \large{ f(3) = | - 6| - 3} \\ \displaystyle \large{ f(3) = 6 - 3} \\ \displaystyle \large{ f(3) = 3}$

Therefore, Range: {-1,1,3}

Let me know if you have any questions!

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