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AlladinOne [14]
2 years ago
14

An internet cafe charges $3.75 to use a computer and $.45 per minute while accesing the internet. What function rule describes t

his situation?
Mathematics
1 answer:
Kazeer [188]2 years ago
5 0

Answer:

y = $3.75(x)  + .45$

Step-by-step explanation:

Take the input and subsitute

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Answer:

-1

Step-by-step explanation:

We can find the slope by change in y of change in x

change in y

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change in x

The y changes  -3  ( goes down 3)

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3 years ago
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Explicación paso a paso:

Debemos buscar el costo de cada boleto y la cantidad de personas que deben ir.

Dada la función que da forma al comportamiento expresado como;

f (x) = (-2x) ^ 2 + 80x + 300 donde;

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f (x) es el número de personas que deben ir

Para obtener x, usaremos la expresión;

x = -b / 2a

De la ecuación cuadrática dada, a = -2, b = 80 yc = 300

Sustituir;

x = -80/2 (-2)

x = -80 / -4

x = 80/4

x = 20

Por lo tanto, el boleto cuesta $ 20.

Lo siguiente es obtener la cantidad de personas que deben ir. Para conseguirlo, sustituiremos x = 20 en la expresión modelada como se muestra;

f (x) = (-2x) ^ 2 + 80x + 300

f (20) = (-2 (20)) ^ 2 + 80 (20) +300

f (20) = (-40) ^ 2 + 1600 + 300

f (20) = 1600 + 1600 + 300

f (20) = 3500

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3 years ago
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(-2,-2)

Step-by-step explanation:

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