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Algebra 1

4.10.1 Analyzing Graphs and Statements in Function Notation

Algebra 14.10.1 Analyzing Graphs and Statements in Function Notation

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Warm Up

This graph shows the populations of Baltimore and Cleveland in the 20th century. B(t)B(t) is the population of Baltimore in year t. C(t)C(t) is the population of Cleveland in year tt.

Line graph showing population trends from 1900 to 2010 for Baltimore (solid blue line) and Cleveland (dashed red line). Both cities peak in mid-1900s, then decline, with Baltimore maintaining a higher population throughout.
1.

Estimate B(1930)B(1930) and explain what it means in this situation.

2.

Which statement is true: B(2000)C(2000)B(2000)C(2000) or B(2000)C(2000)B(2000)C(2000)?

3.

Explain the reasoning for your response to question 2.

4.

Which statement is true: B(1900)=C(1900)B(1900)=C(1900) or B(1900)>C(1900)B(1900)>C(1900)?

5.

Explain the reasoning for your response to question 4.

6.

Were the two cities’ populations ever the same? If so, when?

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