Using arithmetic and geometric progressions work out the following:

An oil rig drills to a depth of 1000metres. Estimate the cost of drilling if the first metre costs £200, with an increase of £22 for each further metre drilled.

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Using arithmetic and geometric progressions work out the following:

An oil rig drills to a depth of 1000metres. Estimate the cost of drilling if the first metre costs £200, with an increase of £22 for each further metre drilled.

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