Math 151

Name_________________________

Project 3: World Population Quadratic: y = a ⋅ x 2 + b ⋅ x + c Year

1900

1910

1920

1930

1940

1950

1960

1970

1980

1990

2000

2010

Population (millions)

1,625

1,733

1,813

1,987

2,213

2,516

3,019

3,693

4,450

5,333

6,081

6,852

Equation: ___________________________ What does x represent? What does y represent? Answer the questions using your best equation. 1. Predict the population for this year?

2.

Predict the population for next year?

3.

Predict the population for the year 2020?

4.

Predict the population for the year 2025?

5.

When will the population double it’s present population?

6.

Find the average rate of change from this year to next year. (slope)

7.

Find the average rate of change from this year to 2020. (slope)

8.

Find the average rate of change from this year to 2025. (slope)

## Proj 3 World Population questions.pdf

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