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Question $18$ of $50$

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$2$ points

Freight car loadings over an $18-$week period at a busy port are as follows:

$\backslash$table$[[$Week$,$Number,Week,Number,Week,Numb$],[1,390,7,480,13,630],[2,410,8,520,14,640],[3,430,9,560,15,680],[4,410,10,540,16,700],[5,430,11,580,17,720],[6,440,12,620,18,740]]$

Obtain a linear trend line for expected freight car lings, and use it to predict expected loadings in the following weeks. Specifically, what's your forecast on the expected loadings in Week $20$ using the linear trend approach? $($Round your answer to a whole number.$)$