In the year 2020 and based on Rita's AGI and number of children, she will have a Child Tax Credit and Credit for Other Dependents of $4,500.
A single person in 2020 with an AGI of less than $200,000 was allowed to claim a child tax credit of $2,000 per child under 17 and a credit for other dependents of $500 for those aged 17 - 18.
This means that Rita will get $2,000 for Luis and Perry, and $500 for Alexis:
= 2,000 + 2,000 + 500
= $4,500
In conclusion, Rita's tax credit would be $4,500.
Find out more about Child Tax Credit at https://brainly.com/question/14328499.