Final answer:
To take himself and his adult children to the movies, Mr. Ramiro needs to pay a total of $36.
Step-by-step explanation:
To find out how much it will cost Mr. Ramiro to take himself and his adult children to the movies, we need to know the number of adult children he has. Let's say he has 3 adult children. Including Mr. Ramiro, there will be a total of 4 people. Since one adult ticket costs $9, the total cost will be 4 x $9 = $36.
Learn more about movie ticket cost