As basic as this might seem I cannot find the value of -y- in this
equation.I need it to determine at which level my department will be in
terms of sales on day 21.Hence, -x- in the equation representing 21.

_Y=278,85LN(X)+2030,2_

Can anyone please help, its my first time in this forum so I hope I was
clear with my problem.Thankyou


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Pedro Monteiro
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