The table belowgives the population of san jose, caifornia and detroit, michigan

Question

The table belowgives the population of san jose, caifornia and detroit, michigan.

                                                     populations

YEAR:                1950            1960            1970         1980        1990

   SAN JOSE:        95,280        204,196        459,913      629,400     782,224

DETROIT:         1,849,568      1,670,144     1,514,063    1,203,368   1,027,974

Step 1: If the trends continue, when will San Jose be as large as Detroit? What will the
two populations be at that time?

Step 2:   Show the method you used to make this prediction. Choose a different method
to check your answer. Discuss the pros and cons of each method.

Explanation / Answer

Step 1: iN 2010 BOTH POPULATIONS WILL BE APPROXIMATELY 847,232 Step 2: 204,196-95,280=108,916 The amount the population increases every ten years subtract 1,849,568-1,670,144=179,424 This amount equals the population decreasing every ten years.

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