Bill works at the movie theater and his grandmother's store. The total number of hours Bill works in a week is represented by the following constraints. The number of hours he works at the movie theater is less than three times the number of hours he works at his grandmother's store.
Bill works fewer than 30 total hours at the two jobs during the week.
When x is the number of hours Bill works at the movie theater and y is the number of hours he works at his grandmother's store, the situation is modeled by this system of inequalities.