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bixtya [17]
3 years ago
6

Select the correct answer. What is the completely factored form of this polynomial? 5x4 + 20x3 − 105x2 A. 5x2(x − 3)(x + 7) B. 5

x3(x + 3)(x − 7) C. 5x2(x + 3)(x − 7) D. 5x3(x − 3)(x + 7)
Mathematics
1 answer:
Alik [6]3 years ago
3 0

Answer:

the correct answer would be C

Step-by-step explanation:

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The number of internet paid search ads is increasing as advertisers move away from traditional marketing methods. The equation y
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Answer: In 2005 the amount spend on internet ads = $74.6 billions.

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Step-by-step explanation:

Given : The number of internet paid search ads is increasing as advertisers move away from traditional marketing methods.

The equation y=6.9x+40.1 can be used to project spending on internet search ads, in billions of dollars, x years after 2000.

To estimate spending on internet ads in 2005.

We need to put x= 5 in the above equation   [∵2005-2000=5]

y=6.9(5)+40.1

y=34.5+40.1

y=74.6

i.e. In 2005 the amount spend on internet ads = $74.6 billions.

Put y= 102 in the given equation, we get

102=6.9x+40.1

61.9=6.9x   [Subtract 40.1 from both sides]

x=\dfrac{61.9}{6.9}=\dfrac{619}{69}=8.97101449275\approx9

And 2000+9=2009 [x is the number of years after 2000]

Hence, in 2009 spending on internet search ads will reach $102 billion .

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