several ways (in that order):
1. center IVs
2. use log
3. change the IVs a little bit, eg, if you have dollar amount, now can you change it to a ratio, eg, dollar amount per person
4. (final resort): orthogonalize the variables. this generally works
In addition, you can include each IV in the model separately, rather than put all of them in a single model
hope this helps
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