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Harman [31]
3 years ago
7

W(x) = x2 + 1; Find w(x + 3)

Mathematics
1 answer:
Tanzania [10]3 years ago
3 0

Given the function w:

\displaystyle \large{w(x) =  {x}^{2}  + 1  }

Since we want to find w(x+3), the input would be x+3.

Substitute x = x+3 in.

\displaystyle \large{w(x + 3) =  {(x + 3)}^{2}  + 1  }

<u>A</u><u>l</u><u>t</u><u>e</u><u>r</u><u>n</u><u>a</u><u>t</u><u>e</u><u> </u><u>S</u><u>o</u><u>l</u><u>u</u><u>t</u><u>i</u><u>o</u><u>n</u>

The answer above works if you want it in vertex form. For this alternate solution, I will convert the function in standard form.

As we know:

\displaystyle \large{ {(x + y)}^{2}  =  {x}^{2}  + 2xy +  {y}^{2} }

Therefore:

\displaystyle \large{ {(x + 3)}^{2}  =  {x}^{2}  + 2(x)(3) +  {3}^{2} } \\  \displaystyle \large{ {(x + 3)}^{2}  =  {x}^{2}  + 6x+  9}

Now for function w:

\displaystyle \large{w(x + 3) =   {x}^{2}  + 6x + 9+ 1  } \\  \displaystyle \large{w(x + 3) =   {x}^{2}  + 6x + 10}

Hence:

  • The answer is w(x+3) = (x+3)^2+1 for vertex form
  • OR w(x+3) = x^2+6x+10
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Dmitry [639]

Answer:

The average rate will be -11000 dollars per year.

Step-by-step explanation:

The price of a house in 2005 = $250,000

The  price of a house in 2010 = $195,000

at x₁ = 2005, f(x₁) = 250,000

at x₂ = 2010,  f(x₂) = 195,000

Using the formula to determine the average rate of change for the

house each year.

Average rate = [f(x₂) - f(x₁)] / [ x₂ - x₁]

                      = [195,000 - 250,000 ] / [2010-2005]

                      = -55000 / 5

                      = -11000

Therefore, the average rate will be -11000 dollars per year.

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3 years ago
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nalin [4]

48/6

use photomath or mathpapa if you need more help

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7 0
2 years ago
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5 0
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stepan [7]

Answer:

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Step-by-step explanation:

I just used my brain to solve it the way I could

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2 years ago
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Answer:

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Step-by-step explanation:

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