cdoyle5679 cdoyle5679

30-08-2018
Mathematics

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Vincent has been collecting 13 rocks per week. He gives 7 rocks away to a friend. If w represents the number of weeks that Vincent has been collecting rocks, which expression represents the number of rocks Vincent has left?

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mathstudent55 mathstudent55

30-08-2018

13 rocks per week for w weeks is 13w rocks.

He gives away 7 rocks, so now he has 13w - 7.

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nathan2003 nathan2003

19-09-2018

the correct answer is A. 13w-7

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