What's the domain and range
1 answer:
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Answer:
$0.25/g
Step-by-step explanation:
20g --- $5.00
1g --- × $5.00 = $0.25
The number of questions in the test is 30
Step-by-step explanation:
Let's call the total number of questions in the test N.
We know that Laura answered 27 questions, and these 27 questions represent the 90% of the test.
Therefore, we can say that 27 is the 90% of N.
Re-writing the percentage as a fraction,
This means that:
And now we can solve for N to find the number of questions in the test:
Learn more about percentage:
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