How much does an IXL membership cost?

Related questions

1. How many questions is IXL diagnostic?

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1. #month
2. #purchase
3. #family
4. #additional
5. #starts
6. #information
7. #single
8. #membership
9. #option
10. #preferred
11. #child
12. #costs
13. #subject
14. #pricing
15. #select