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PSYCHO15rus [73]
3 years ago
8

If total advertising expenditures on television advertising declined 4.1% to $141.7 billion in the current year, how much was sp

ent on television advertising in the previous year? Round your answer to one decimal.
Mathematics
1 answer:
Vanyuwa [196]3 years ago
4 0

Using proportions, it is found that $147.8 billion was spent on television advertising in the previous year.

  • $x, in billions, was spent on advertising expenditures on television last year.
  • This year, the amount declined 4.1%, hence it is 100% - 4.1% = 95.9% of last year's amount, that is, 0.959x.

This year spending's is of 141.7 billion, hence, the equation is:

0.959x = 141.7

x = \frac{141.7}{0.959}

x = 147.8

$147.8 billion was spent on television advertising in the previous year.

To learn more about proportions, you can take a look at brainly.com/question/24372153

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Complete question :

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Let
x-------> the width of the rectangular area
y------> the length of the rectangular area

we know that
y=x+15------> equation 1
perimeter of a rectangle=2*[x+y]
2x+2y <= 150-------> equation 2

substitute 1 in 2
2x+2*[x+15] <=150--------> 2x+2x+30 <=150----> 4x <=150-30
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the width of the rectangular area is at most 30 ft
y=x+15
for x=30
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 the length of the rectangular area is at most 45 ft

see the attached figure
the solution is<span> the shaded area</span>

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