hugo received $100 for his bithday. He then saved $20 per week until he had a total of $460 to buy a printer. Use the equation t
1 answer:
Answer:
18 weeks
Step-by-step explanation:
So, Hugo received $100 for his birthday.
He saved $20 per week. Let x denote the weeks that passed. Therefore:
This equation represents the total money y Hugo has after x weeks.
The printer cost $460. Thus, set y to $460:
Solve for x.
Subtract 100 from both sides:
Divide both sides by 20:
Therefore, it took Hugo 18 weeks to save up $460.
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Question:
Suppose that the populations of the United States and China both increase by 12 million people in one year. What would be the relative change for each country? Answer to the nearest tenth of a percent (1 decimal place). Make sure that you fill in each answer area before checking "How Did I Do?".
If you assume that the U.S. population is about 300 million, an increase of 12 million would result in a relative change of Number %.
If you assume that China has about 1 billion people, an increase of 12 million would result in a relative change of Number %.
Answer:
The relative change of the United States and China is 4% and 1.2%, respectively.
Step-by-step explanation:
Given
Represent population with p. So, we have:
United States
China
Required
Determine the relative change for each country
Relative change, C is calculated as:
For United States
For China
The relative change of the United States and China is 4% and 1.2%, respectively.