document.write( "Question 335634: Alfred is practicing typing. The first time he tested himself, he could type 23 words per minute. After practicing for a week, he could type 26 words per minute. After two weeks he could type 29 words per minute. Based on this pattern, predict how fast Alfred will be able to type after 4 weeks of practice \n" ); document.write( "

Algebra.Com's Answer #240662 by stanbon(75887) $\"\"$ $\"About$

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Alfred is practicing typing. The first time he tested himself, he could type 23 words per minute. After practicing for a week, he could type 26 words per minute. After two weeks he could type 29 words per minute. Based on this pattern, predict how fast Alfred will be able to type after 4 weeks of practice
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\n" ); document.write( "You have 3 points: (0,23) ; (1,26) ; (2,29)
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\n" ); document.write( "Notice that y increases 3 for every x-increase of 1; that is the slope;
\n" ); document.write( "Notice that y = 23 when x = 0 ; that is the y-intercept.
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\n" ); document.write( "f(x) = 3x+23
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\n" ); document.write( "Therefore f(4) = 3*4 = 23 = 35
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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