document.write( "Question 547070: In 1990 the population of Anchorage Alaska was about 226000 and increasing at an annual rate of about 2.5%. When will the population reach 1 million? Give the year and the month. \n" ); document.write( "

Algebra.Com's Answer #356202 by josmiceli(19441) $\"\"$ $\"About$

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At the end of 1990:
\n" ); document.write( " $\"+P+=+226000+\"$
\n" ); document.write( "At the end of 1991:
\n" ); document.write( " $\"+P+=+226000+%2B+.025%2A226000+\"$
\n" ); document.write( " $\"+P+=+226000%2A%28+1+%2B+.025+%29+\"$
\n" ); document.write( "At the end of 1992:
\n" ); document.write( " $\"+P+=+226000%2A%28+1+%2B+.025+%29+%2B+.025%2A226000%2A%28+1+%2B+.025+%29+\"$
\n" ); document.write( " $\"+P+=+%28+1+%2B+.025+%29%2A226000%2A%28+1+%2B+.025+%29+\"$
\n" ); document.write( " $\"+P+=+226000%2A%28+1+%2B+.025+%29%5E2+\"$
\n" ); document.write( "---------------------------
\n" ); document.write( "I can say:
\n" ); document.write( " $\"+1000000+=+226000%2A%28+1+%2B+.025+%29%5En+\"$
\n" ); document.write( "Where $\"+n=0+\"$ is 1990
\n" ); document.write( " $\"+n+=+1+\"$ = 1991, etc.
\n" ); document.write( " $\"+%28+1+%2B+.025+%29%5En+=+1000000%2F226000+\"$
\n" ); document.write( " $\"++1.025%5En+=+4.425+\"$
\n" ); document.write( " $\"+n%2Alog%28+1.025+%29+=+log%28+4.425+%29+\"$
\n" ); document.write( " $\"+n+=+log%28+4.425+%29+%2F+log%28+1.025+%29+\"$
\n" ); document.write( "You can find with calculator
\n" ); document.write( "Add n to 1990
\n" ); document.write( "The decimal portion gets multiplied by 12 to find month \n" ); document.write( "

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