Alexandra has a stand in the marketplace where she sells ground cumin. She has a fixed amount of weekly expenses, and she sells her cumin for $\$7.20$ per kilogram. If she sells $90$ kilograms of cumin, her weekly net profit is $\$414$. **What are Alexandra's weekly expenses?** $\qquad$$\$$[[☃ numeric-input 1]] **How much cumin does Alexandra have to sell to cover her weekly expenses?** $\qquad$[[☃ numeric-input 2]] kilograms