Final answer:
To represent a situation where Romeo and Juliet's combined amount of money is less than $100, the correct inequality is $Romeo + $Juliet < $100.
Step-by-step explanation:
The situation presented requires the use of an inequality symbol to compare the sum of money Romeo and Juliet have to $100. When we are considering a situation where the combined amount of money that Romeo and Juliet have is less than $100, we would write the inequality as $Romeo + $Juliet < $100. This is an inequality expression indicating that when you add the amount of money Romeo has to the amount of money Juliet has, the total should be less than $100.