SOLUTION: Karabo is training by running the marathon he starts his training by running 40km pper week . each week he increase the distance covered by 10km. Write down the formula to calcula

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Question 1177558: Karabo is training by running the marathon he starts his training by running 40km pper week . each week he increase the distance covered by 10km.
Write down the formula to calculate the distance he runs in the nTH week

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!

an = 40+(n-1)*10
an = 40 +10n-10
an =10n+30