#arithmetic and geometric sequences

4 messages · Page 1 of 1 (latest)

terse wraith
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Can someone explain for part b why i do 23-1 for my 'n' / power value. And idk how they did C

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stiff solstice
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for part b you do n-1 if you count the distance between 2040 and 2018 (inclusive) to be 23

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so you have to -1 because it starts decreasing in 2019

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as for part c each year will have at least 1500 tonnes of this mineral mined each year