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Home > A2C > Chapter 4 > Lesson 4.2.1 > Problem 4-73


The gross national product (GNP) was dollars in 1960 and it increased at the rate of per year until 1989. Use this information to answer each of the questions below. (The number is expressed in scientific notation. Written in standard notation, the number is .)

  1. What was the GNP in 1989?

Multiply the GNP in 1960 by twenty-nine times.

The GNP in 1989 is dollars.

  1. Write an equation to represent the GNP t years after 1960, assuming that the rate of growth remained constant.

Remember that the GNP increases by each year.

  1. Do you think the rate of growth really remains constant? Explain.

    If you don’t know or you aren’t sure, try looking it up on the internet. Look for a graph. You could enter GNP USA into a search engine.