Combine like terms: 18a - 8b -1
Answer:
3,200??
Step-by-step explanation:
It asked at the end what the total amount paid was but it says it right at the top. "Nicole bought a $3,200 computer...")
From the information we have, we know that each book costs 1.20 dollars. So we shall say this price is at 100% .
Now we need to form an equation to get the percentage when the books are sold at 0.80 dollars.
100% = 1.20
x = 0. 80
Where x is the new percentage when the sale is at 0.80 dollars.
We cross multiply the equation:
1.20 *x = 0.80 * 100
1.2x = 80
x = 80/1.2
x = 66.7%
Round off 66.7 to the nearest tenth we get 67%
The notebooks are sold at 67% (of the original cost).
Usando conceptos de funciones lineales, se encuentra que hizo 5 cortes.
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Una funcion lineale tiene el seguiente formato:

En que:
- a eres lá inclinacion, o sea, lo que es pago por cada corte.
- b eres el intercepto, o sea, lo pagamiento fixo por día.
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- Pagan $50 por corte realizado, o sea,
. - $25 fixo al día, o sea,

Entonces, la funcion de su recibimiento y, como funcion de su numero de cortes x, es da por:

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- Recibió $275, o sea,

Entonces, el numero de cortes es:





Realizó 5 cortes.
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