document.write( "Question 1205447: If 10,000 bacteria live in a test tube at 12pm and grow continuesly to 13000 at 3pm. Use the formula A= pe raised to rt, and find how many bacteria at 7pm. Where a is new population of bacteria, p is initial population of bacteria, and r is the growth rate, and t is time in hrs. \n" ); document.write( "
Algebra.Com's Answer #842249 by greenestamps(13203)\"\" \"About 
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\n" ); document.write( "\"A=pe%5E%28rt%29\"

\n" ); document.write( "From the given information about the numbers of bacteria at 12pm and 3pm....

\n" ); document.write( "\"13000=10000e%5E%283r%29\"
\n" ); document.write( "\"e%5E%283r%29=1.3\"

\n" ); document.write( "Using that to find the number of bacteria at 7pm....

\n" ); document.write( "\"x=10000e%5E%287r%29\"
\n" ); document.write( "\"x=10000%28e%5E%283r%29%29%5E%287%2F3%29\"
\n" ); document.write( "\"x=10000%281.3%29%5E%287%2F3%29\"
\n" ); document.write( "x = 18444.54 to 2 decimal places; round to the nearest whole number.

\n" ); document.write( "ANSWER: 18,445 bacteria at 7pm

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