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Advocard [28]
4 years ago
14

What is the domain and range for the function f(x) = x2 + 4x - 21?

Mathematics
1 answer:
bezimeni [28]4 years ago
3 0

Answer:

Domain: (−∞,∞),{x|x∈R}

Range: [−25,∞),{y|y≥−25}



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Answer:

= − 1 3

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Histograms are useful when we have data which can be divided into several classes or groups. The histogram shows the trend of each class and the trend among the different classes. For example when we have about 50 different values ranging from 1 to 20, it will be a better approach to draw a histogram in this case by dividing the data into small ranges e.g 1 to 4, 5 to 9 and so on and counting the frequency for each class.

Dot plot is useful when we have a small number of individual values. In this case we can visualize how many times each individual value occurred in the data. This is useful when the number of values in the data is less.

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1. Is the average change in population is the same now as it was 50 years ago? Explain your answer.
katrin [286]

No, the average change in population is not the same as it was 50 years ago.

Reason in Support of the Answer:

In many important ways, the demographic future of the United States and the rest of the world is substantially different from the recent past. The world's average population approximately tripled between 1950 and 2010, and the U.S. population nearly doubled.

However, it is anticipated that between 2010 and 2050, both globally and in the United States, average population growth will be substantially slower and will disproportionately favor the oldest age groups. Hence it is seen that the average change in population is never constant. It depends on the demographic trends and conditions, whether the average change in population will be larger or comparatively trivial in the future. And, similarly, it can be said that the average change in population is not the same as it was 50 years ago.

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brainly.com/question/2426692

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-30 should be the answer

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