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Brilliant_brown [7]
3 years ago
11

Given f(x) = 2x2 - 3, what is the value of f(x + 3)?

Mathematics
1 answer:
creativ13 [48]3 years ago
8 0

Answer:

Answer A is correct.

Step-by-step explanation:

Please note the difference beteen f(x+3) and f(3).

So f(x + 3) means, where you see x in the equation, you substitute x+3. (This is a recursive entry).

f(x)= 2x² - 3

f(x)= -3 + 2x²

f(x)= -3 + 2* (x+3)²

f(x)= -3 + 2* (x+3) * (x+3)

f(x)= -3 + 2* (x² + 3x + 3x + 9)

f(x)= -3 + 2* (x² + 6x + 9)

f(x)= -3 + 2x² + 12x + 18

f(x)= 2x² + 12x + 18 -3

f(x)= 2x² + 12x + 15

So answer A is the correct answer

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Westkost [7]
I checked all answers on Photomath.
Let me know if that’s helpful.

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3 years ago
Given b = 2 and h = 8, what is the equation of the graph if the parent function is y equals the square root of x ?
vfiekz [6]
What's the formula??????
8 0
4 years ago
A dairy farmer wants to mix a 85% protein supplement and a standard 55% protein ration to make 1200 pounds of a high-grade 80% p
mr_godi [17]

The diary farmer should use 1000 pounds of 85 % protien and 55 % of 200 pounds to make 1200 pounds of a high-grade 80% protein ration

<em><u>Solution:</u></em>

Let the amount of 85 % protien supplement be "x"

Then amount of 55 % protien be (1200 - x)

According to given question,

85 % of "x" protien supplement + 55 % of 1200 - x protien used to get 80 % of 1200 pounds

85 % of x + 55 % of (1200 - x) = 80 % of 1200

\frac{85}{100} \times x + \frac{55}{100} \times (1200 - x) = \frac{80}{100} \times 1200\\\\0.85x + 0.55(1200 - x) = 960\\\\0.85x + 660 - 0.55x = 960\\\\0.3x = 960 - 660\\\\0.3x = 300\\\\x = 1000

Pounds of 85 % protien used = 1000 pounds

Then pounds of 55 % protien used = 1200 - 1000 = 200 pounds

Thus he should use 1000 pounds of 85 % protien and 200 pounds of 55 % protien to get 1200 pounds of a high-grade 80% protein ration

7 0
3 years ago
Frank Friedman writes a $45 check, but his account has only $20 in it. He must also pay Central City Power and Water charges $25
Kruka [31]
70$ in the end because of all the charges and such

6 0
3 years ago
Read 2 more answers
Un hombre compra un caballo por 50 dolares. Vende el caballo por 70 dolares. Despues vuelve a compar el caballo por 80 dolares.
nikdorinn [45]

Answer:

30 dólares es la ganancia neta.

Step-by-step explanation:

En la primera transacción, el hombre está perdiendo 50 dólares:

1. -50 dólares

En la segunda transacción, el hombre gana 70 dólares:

2. -50 + 70 = +20 dólares

En la tercera transacción pierde 80 dólares:

3. 20 - 80 dólares = -60 dólares

Y en la última transacción, la ganancia es de 90 dólares. Así, la ganancia neta es:

4. -60 dólares + 90 dólares =

<h3>30 dólares es la ganancia neta</h3>
7 0
3 years ago
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