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How much will Andrew earn over the course of 10 weeks?

Hev123  May 1, 2018
 #1
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Use Arithmetic Series formula:

 

S = N / 2 [2F + (N - 1) x D]

S = 10 /2 [2*4 + (10 - 1) x 13]

S = 5 [8 + (9) x 13]

S = 5 [8 + 117]

S = 5[125]

S =$625 - what Andrew will earn in allowance over a period of 10 weeks.

Guest May 2, 2018

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