document.write( "Question 919487: Karabo is training by running for the comrade marathon ;he starts his training by running 40km per week.each week he increases the distance covered by 10km .write down the formula to calculate the distance he runs in the n-th week \n" ); document.write( "
Algebra.Com's Answer #557782 by josmiceli(19441)\"\" \"About 
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Week number and distance in km run that week:
\n" ); document.write( "1 , 40
\n" ); document.write( "2 , 40 + 10
\n" ); document.write( "3 , 40 + 20
\n" ); document.write( "4 , 40 + 30
\n" ); document.write( "--------------
\n" ); document.write( "\"+d+=+40+%2B+%28+n-1+%29%2A10+\"
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