I think you meant to write that 4 times the beginning value plus $52.71 is $172.90.
If that analysis is correct, then let x = the beginning value
then 4x + $52.71 = $172.90
4x = 172.90 - 52.71
4x = $120.19
x ≅ $30.05
SLL S.
asked 01/24/16
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