SAT Linear inequalities in one or two variables Question

To win a game show, a contestant needs to score at least 100 total points from two rounds. Correct responses in the first round are worth 2 points each, and correct responses in the second round are worth 5 points each. Which inequality models this situation, where $f$ is the number of correct responses in the first round and $s$ is the number of correct responses in the second round?