Describe a professional or a personal situation you can represent using a matrix

Josephine has a great garden with and area of 2x2 + x - 6 square feet

If you answer right ill give brainliest, : )

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax