**Kuta Software** has worksheets divided up by topic. The answers are on the last pages of each worksheet set, but there are no step-by-step solutions.

https://www.kutasoftware.com/freeipc.html

**IXL** has practice problems.

https://www.ixl.com/math/precalculus

**Math.com** has practice problems for all levels of math.

http://www.math.com/students/practice.html

**UC Davis** has practice problems with step-by-step solutions.

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