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arsen [322]
3 years ago
15

Which of these mappings is a function?

Mathematics
1 answer:
strojnjashka [21]3 years ago
6 0

Answer:

B

Step-by-step explanation:

My power of guesssing :)

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At a local store, kelly and martin bought some notebooks and pencils. Kelly bought 4 notebooks and 25 pencils for 16.71. Martin
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Let n = cost of 1 notebook
Let p = cost of 1 pencil

Then,

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You can solve for one variable in terms of the other and then substitute into the remaining equation.

3n + 4p = 8.5
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Multiply the top equation by -2 so that the p-containing terms cancel each other out:

-2(3n + 4p = 8.5)
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-n + 0 = -2.5

So after dividing both sides by -1, we see that n = $2.5. Plugging into the first equation gives p = $0.25.


3n + 4p = 8.5
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3 years ago
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MA_775_DIABLO [31]

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4 0
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Dahasolnce [82]

Let y = the distance between the top left corner and the bottom right corner

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Bezzdna [24]

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Step-by-step explanation:

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Helpppp will mark brainliest.
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