Which function represents exponential decay?
1 answer:
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Answer:
5. $40
6. 500 students
7. 60 books
8. 63 pages
Step-by-step explanation:
<h3><u>Question 5</u></h3>Given:
- Aiden spent $18 on souvenirs.
- $18 is 45% of the money he brought on the trip.
Let x be the money Aiden brought on the trip.
Create equivalent ratios with the given information and defined variable, and <u>solve for x</u>:
Therefore, Aiden brought $40 on the trip.
<h3><u>Question 6</u></h3>Given:
- Angel received 300 votes.
- 300 votes was 60% of all the votes.
Let x be the number of students who voted in the election.
Create equivalent ratios with the given information and defined variable, and <u>solve for x</u>:
Therefore, there were 500 students who voted in the election.
<h3><u>Question 7</u></h3>Given:
- The students sold 80% of the books.
- The total number of books they sold is 48.
Let x be the number of books in the sale.
Create equivalent ratios with the given information and defined variable, and <u>solve for x</u>:
Therefore, there were 60 books in the book sale.
<h3><u>Question 8</u></h3>Given:
- Aiyana read 147 pages of the book.
- She completed 70% of the book.
If she has completed 70% of the book, then she still has 30% left to read, as 100% - 70% = 30%.
Let x be the number of pages Aiyana still has to read.
Create equivalent ratios with the given information and defined variable, and <u>solve for x</u>:
Therefore, Aiyana still has 63 pages left to read.