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Nataly [62]
3 years ago
9

When Carrie mows a lawn, she charges a flat fee of $5 plus an hourly rate, r. Carrie worked 2 hours at her last job. The equatio

n 2r+5=20 represents, in dollars, what Carrie charged. What is Carrie’s hourly rate?
Mathematics
1 answer:
Dmitrij [34]3 years ago
3 0

Answer:

$7.50

Step-by-step explanation:

You use inverse operations to evaluate the equation. You subtract 5 from 20, which is 15. Then you divide 15 by 2, which is 7.5.

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Step-by-step explanation:

Let,

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According of statement;

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\frac{36x}{100}=432\\Multiplying\ both\ sides\ by 100\\100*\frac{36x}{100}=432*100\\36x=43200\\Dividing\ both\ sides\ by\ 36\\\frac{36x}{36}=\frac{43200}{36}\\x=1200

Sara needs to collect 1200 signatures.

Keywords: Percentage, Division

Learn more about percentages at:

  • brainly.com/question/10879401
  • brainly.com/question/10940255

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