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zloy xaker [14]
2 years ago
8

You receive an $80 gift card to a bookstore. Hardback books cost $8 and paperbacks cost $4. Which graph below represents this si

tuation?​

Mathematics
1 answer:
Natasha2012 [34]2 years ago
6 0
The answer is D i had a similar question
You might be interested in
Dada la sucesión an = 1700 + 4,1· n2 + 304,9· n
shutvik [7]

Concluimos que la opción correcta es <em>"Solo II"</em>.

Una expresión es una sucesión aritmética si y solo si existe entre dos elementos <em>consecutivos</em> cualesquiera de la serie la misma diferencia. La sucesión aritmética es definida por una expresión de la forma:

a_{n} = a + b\cdot n, n\in \mathbb{N} (1)

Donde a,b son coeficientes de la sucesión.

Asimismo, una expresión es una sucesión geométrica si y solo si entre dos elementos <em>consecutivos</em> cualesquiera de la serie existe la misma razón. La sucesión geométrica es definida por una expresión de la forma:

a_{n} = a\cdot r^{b\cdot n}, n\in \mathbb{N} (2)

Donde a, b, r son coeficientes de la sucesión.

Por último, una expresión es una sucesión monótona creciente si dados dos elementos <em>consecutivos</em> de una serie, el elemento posterior es siempre mayor que el elemento anterior. Matemáticamente, debe satisfacerse la siguiente condición:

\frac{a_{n+1}}{a_{n}} > 1, n\in \mathbb{N} (3)

Esta claro por inspección directa que la sucesión dada no es aritmética ni geométrica y cabe comprobar si es monótona creciente. Valiéndonos de (3), realizamos las operaciones algebraicas pertinentes:

r = \frac{1700 + 4,1\cdot (n+1)^{2}+304,9\cdot (n+1)}{1700 + 4,1\cdot n^{2}+304,9\cdot n}

r = \frac{1700+4,1\cdot (n^{2}+2\cdot n +1) +304,9\cdot (n+1)}{1700 + 4.1\cdot n^{2}+304,9\cdot n}

r = \frac{1700+4,1\cdot n^{2}+304,9\cdot n+4,1\dot (2\cdot n +1) +304.9}{1700+4,1\cdot n^{2}+304,9\cdot n}

r = 1 + \frac{8,2\cdot n +309}{1700 + 4,1\cdot n^{2}+304,9\cdot n}

Como puede apreciarse, r > 1. Por tanto, la sucesión es monótona y creciente.

En consecuencia, concluimos que la opción correcta es <em>"Solo II"</em>.

Invitamos cordialmente a leer esta pregunta sobre sucesiones: brainly.com/question/21709418

4 0
3 years ago
A) y= -3.5x + 57.5<br>B) y= 3.5x + 57.5<br>C) y= -3.5x + 32.5<br>D) y= -3x + 57.5
spin [16.1K]
The answer is y=-3x+57.5
7 0
3 years ago
Read 2 more answers
Just the last two ones please and thank you if you awnsered this
Rudik [331]
Number 1 is twenty and number two is fifty six
8 0
3 years ago
Work too plzthank youuuuuuuuuuu
Dovator [93]
I would show you the picture with the work but I am on my computer because I am charging my phone.. So, I will just show the work 

15% = \frac{15}{100} =  \frac{30}{100} which gives you the whole quality of the number of 200

5 0
3 years ago
GIVING OUT BRAINIIST
OLEGan [10]

Answer:

A would go to 43.6

B would go to 43.5

C would go to 43.60

D would go to 43.59

i think...

Step-by-step explanation:

8 0
3 years ago
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