You want to save for your child’s college education and would like to have $30,000

You want to save for your child’s college education and would like to have $30,000 each year, assume 4 years. His birthdate is 11/15/2019 and expect him to start in Aug after he turns 18. What’s prompting you to think about this, is your parents just gave him a gift of 1,115.19 and your in-laws just gave to him $2,500. What rate of return will you model(assume) and why? What savings amount and frequency will you determine to be acceptable?